| 词汇 | tuff |
| 释义 | tuff adjective not standardinformaluk /tʌf/ us /tʌf/ a way of writing tough（tough 的另一种拼法） Physically strong and powerful (as) tough as old bootsidiom beefy billy-o brute brute forcephrase bulletproof indestructible indestructibly industrial-strength intensely invincible rugged ruggedly shatterproof shockproof sinewy stalwart violent washboard stomach with a vengeanceidiom You can also find related words, phrases, and synonyms in the topics: Complicated and difficult to do Expressions meaning 'it isn't important to me' Examples of tufftuff The formation of the clay minerals can be divided into three different stages in the tuffs. The results show that the fluid compositions varied significantly between the different tuffs. Toward the inlet of the conduit, the capstones consisted of extremely heavy, river-worn, shaped slabs of tuff. From the data available on the tuff samples so far, the recognition of species has proven problematic due to the fragmentary nature of the fossils. Since the chemical composition of the primary tuffs likely reflects their source material, the tectonomagmatic derivation of the volcanic ashes can be deduced. Capstones also made of volcanic tuff covered the conduit for the length of its course, although differences in how the capstones were worked are apparent. These two tuffs could have had the same parental magmas than the other tuffs and associated basalts. The sequence comprises alternations of coarse tuff units that fine upwards and thinner lapilli-rich tuff horizons. In the massive tuffs, vitric to crysto-vitric varieties show delicately shaped glass shards and broken phenocrysts of euhedral quartz, plagioclase, muscovite, orthoclase, zircon and ilmenite. More rarely clasts of streaky flow-banded or parataxitic material occur, derived from earlier welded tuffs. Simultaneous eruption of ash-flow tuffs resulted in a sequence of interbedded tuffs, sedimentary breccias and andesitic lavas. 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. |
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