Flavin: Any of a class of organic compounds, pale yellow biological pigments that fluoresce green.黄素: 一组浅黄 、 绿萤光生物色素,在植物和动物组织中分布很广,含量少.The cheaper FNDs fluoresce roughly as well as those produced with an electron beam.此种...
I mouthed some sympathetic platitudes.我言不由衷地说了一些表示同情的客套话。He was mouthing the usual platitudes about the need for more compassion.他言不由衷地说了些需要更加同情之类的陈腔滥调.He delivered a long prose full of platitudes.他发表了一篇充满陈词滥调的文章....
Travellers need to keep their wits about them.旅行者需要随机应变。The authorities are at their wits'end about juvenile delinquency.当局对青少年犯罪束手无策.You have to have your wits about you in a dangerous situation.在危急的情况下,你得随机应变....