按一般标准衡量, 地核是由相当致密的物质组成的.Judge by ordinary standards, the core is made of rather dense stuff.地球的中心是地核,地核的周围是地幔.The earth has a core and a mantle around it.一般认为地核至少是外核由镍和铁构成.The earth's core, at least the outer one is...
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....