1.know of 知道有，聽說過
例句：Do you know of any other excuses?
你還知道其他的任何借口么？
2.know sth. backwards 對某事物熟得能倒背如流
例句：You've read that book so many times you must know it backwards by now!
那本書你讀了很多遍，現在一定能倒背如流了！
3.know the score 了解情況，了解真相，知道(問題的）癥結
例句：Delve a little deeper if you really want to know the score.
如果真想知道事情的個中緣由就需要深一層的鉆研了。
4.know what one's talking about 確鑿有據地講話
例句：You don't know what you are talking about.
你在胡說八道。
5.lab experiment 實驗室試驗,暗室實驗
例句：A previous study showed that the fish can, in fact, "count"—differentiating between numerical quantities in a lab experiment.
此前一項研究表明，事實上，魚可以“計數”—與實驗室試驗的數值有區別。
6.lab hours 實驗室開放時間
例句：The FBI also says Ivins worked unusually late lab work hours around the time of the attacks.
FBI還說Ivins在發起攻擊時間左右一直在實驗室里工作到很晚。