Biostratigraphic

a. [古生]生物地層的

??? 情景例句

get some background on the job.
了解這項工程的一些背景。
I wouldn't worry about it, if I were you.
如果我是你,我就不會擔心。
Well, would you like something to drink? What about a glass of milk?
你想喝些什么嗎?要不要一杯牛奶?
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