| 词汇 | selenium |
| 释义 | selenium noun[ U ] uk /səˈliː.ni.əm/ us /səˈliː.ni.əm/(symbolSe) a chemical element used in photocells and photographic devices and also necessary in small amounts in the body硒（一种化学元素，用于光电池和照相器材中，也是人体必需的微量元素） Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium iodine lithium manganese nickel plutonium quicksilver silicon sodium sulphur transition metal selenium | American Dictionaryselenium noun[ U ] us/səˈli·ni·əm/ chemistry a chemical element that is used in electronic devices and is also necessary in small amounts in the body Examples of seleniumselenium Selenium is part of an enzyme that helps defend against free radicals. Tests of various possibilities led to a focus on the effects of selenium. Earlier studies have also shown lower levels of selenium in blood plasma in patients with rheumatoid arthritis compared to healthy individuals. In some cases, increased salinity or toxic materials (for example arsenic, selenium) from both natural and human sources have rendered the groundwater unusable even for agricultural purposes. Twelve chapters examine environmental deficiency and toxicity, and cover: volcanic emissions; radon; arsenic; fluoride; water hardness; selenium; iodine, aerosols and soil-borne pathogens, with more general reviews. According to these studies, the supply of selenium to domestic animals and the general population has declined. From Europarl Parallel Corpus - English For this reason, 10 grammes of selenium, rather than just six, are now being added to selenium fertilizers. From Europarl Parallel Corpus - English There is a known selenium deficiency in the soils in this country. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 No action is recommended specifically to avoid selenium deficiency. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I should like very much to know what happens in the manufacture of selenium and what it is used for. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Selenium is a substance listed here, and it also is very toxic, affecting particularly the lungs and trachea. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 We are all pleased to see that the various forms of arsenic trioxide have now been exempted and that selenium has been taken out. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 I now wish to ask questions about the three metallic substances, uranium, beryllium and selenium. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Selenium is an essential trace element which is particularly important in protecting the body against oxidative damage of the cells. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 They have ranged from anthropological problems and problems concerning the relations between families or nations, to research on the toxicity of selenium. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 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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