| 词汇 | decay |
| 释义 | decay verb uk /dɪˈkeɪ/ us /dɪˈkeɪ/ B2[ I or T ] to become gradually damaged, worse, or less; to cause something to do this: 腐蚀;（使）衰败，（使）衰弱 Sugar makes your teeth decay.糖能引起蛀牙。 The role of the extended family has been decaying for some time.大家庭的作用开始减弱已经有一段时间了。 Pollution has decayed the surface of the stonework on the front of the cathedral.大教堂前部的石刻表面已经因为污染受到了侵蚀。 the smell of decaying meat腐肉气味 [ I ] physics specialized If a radioactive substance decays, it changes to a different form, producing radiation: （放射性物质）衰变 decay intoRadioactive uranium decays into stable lead at a known rate.放射性铀以已知的速率衰变为稳定的铅。 As the actinium-225 decays, it gives off short-lived, highly energized alpha particles. 随着锕-225的衰变，它会释放出寿命短、能量高的α粒子。 Floating in the dirty river were dead fish, already starting to decay. The bacteria live on food particles and produce acid that decays the enamel on your teeth. The flesh on a dead body decays very rapidly. It's sad to watch a beautiful rose wither and decay in such a short time. Plants and animals decay into the soil, replenishing the minerals and nutrients. Decaying and staying fresh best-before date biodegradable biodegrade compost decompose decomposition mouldy nonperishable nutrient cycling out of date perish perishable rack seed sell-by date shrivel shrivelled soft rot spoil withered You can also find related words, phrases, and synonyms in the topics: Deteriorating and making worse Physical & chemical processes Physics: radiation & radioactivity decay noun[ U ] uk /dɪˈkeɪ/ us /dɪˈkeɪ/ C2 the process of decaying: 腐蚀;衰败，衰弱 environmental/industrial/moral/urban decay环境恶化／工业衰退／道德沦丧／城市衰落 dental/tooth decay蛀牙 fall into decayThe buildings had started to fall into decay.那些建筑已经开始破败了。 in decay This industry has been in decay for some time.这个行业早就开始衰退了。 physics specialized the process by which a radioactive substance changes to a different form, producing radiation: （放射性物质的）衰变 Radon is emitted in the natural decay of radioactive materials in rock and soil. 氡是岩石和土壤中的放射性物质在自然衰变的过程中释放出来的。 the decay rate of beryllium-7铍-7的衰变率 Many children come to us with severe dental decay. Unemployment and inner city decay are inseparable issues which must be tackled together.失业与市中心贫民区的破败是分不开的问题，必须一起解决。 Sugar is a major cause of tooth decay.糖是造成蛀牙的主要原因。 The mansion had an atmosphere of genteel elegance and decay.这座大宅透出上流社会的高贵典雅，也散发着衰败的气息。 Areas of the most serious urban decay are to receive funds for new building and redevelopment schemes. Decaying and staying fresh best-before date biodegradable biodegrade compost decompose decomposition mouldy nonperishable nutrient cycling out of date perish perishable rack seed sell-by date shrivel shrivelled soft rot spoil withered You can also find related words, phrases, and synonyms in the topics: Physical & chemical processes Physics: radiation & radioactivity decay | American Dictionarydecay noun[ U ] us/dɪˈkeɪ/ damage, or a state that becomes gradually worse: The dentist says I have a lot of tooth decay. There’s still too much crime, poverty, and decay in the neighborhood. Your attitude just contributes to the growing social decay. decaynoun[U] (PROCESS)physicsus/dɪˈkeɪ/ the process by which a radioactive substance breaks down and sends out harmful radiation decayverb[ I/T ]us/dɪˈkeɪ/ [ I ]City services are rapidly decaying. decayingadjective[ not gradable ]us/dɪˈkeɪ·ɪŋ/ Empty lots stand next to abandoned, decaying buildings. Examples of decaydecay Conversely, no scattered particles exist at early times, and instead the scattered distribution grows from zero as the unscattered streaming distribution decays. The case where a lower-hybrid pump wave decays into daughter and ion-cyclotron waves in a plasma with ion-temperature anisotropy is considered. Ideally there should be eight perceivable repetitions (decaying away) which would be an octave transposition (8 6 3/4 tone) in all. Assume that we take initial conditions so that this magnitude decays. The monastic community itself had decayed because no ordination had taken place for a considerable time. Regressing to models of decaying exponentials led to improved quality in the synthesis of several of the percussive tracks. Such regions and waves cannot exist in isotropic plasmas, where the wave is a superposition only of oscillating or of exponentially decaying partial waves. The reverse is true for wall pressure, which decays less rapidly in continuum flow. At marginal instability, the real part of only one eigenvalue changes sign from negative (decaying disturbance) t o positive (growing disturbance). Indeed, it seems that it is this lacunarity what makes possible certain properties such as decays of correlations and the central limit theorem. If one adds a damping term, the oscillation decays. Diaspores are gravity dispersed and the seed coat rapidly decays, exposing cotyledons to the immediate environment prior to germination. Seeds were either already decayed or were in the process of decaying. Manly independence decayed as the individual allowed his body to be built up by such "external" forces of the "non-ego" (1904 247). Many of these were envisioned as artistic undertakings that would ameliorate the urban environment, such as improving water supplies or cleaning up decayed neighborhoods. See all examples of decay These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Collocations withdecaydecayThese are words often used in combination with decay. Click on a collocation to see more examples of it. decay mode The second employs the lower-hybrid wave as the decay mode. decay product In 1983, they repeated the experiment using a new technique: measurement of alpha decay from a decayproduct that had been separated out chemically. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. dental decay The addition of a very small amount of fluoride to drinking water in appropriate localities likewise prevents or reduces dental decay, but on this matter there has been considerable resistance. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. See all collocations with decay |
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