Biosafety
n. [常用作定語]生物研究安全性
??? 情景例句
Did you enjoy yourself last weekend?
上周末你過得開心么？
Everything must have a beginning.
凡是都有起源。
You have to learn when to ask for help and when to ask for information.
你得學會什么時候請求幫助，什么時候打聽信息。