若干研究已经发现了两个重要常量。Two significant constants have been found in a number of research studies.其值不变的量称为常量.A quantity whose value remains unchanged is called a constant.在无外力时,质心的速度是常量.The velocity of the center of mass is cons...
Please listen while I define your duties.在我规定你的职责时,请仔细听好.Please define the words.请准确地解释这些字的意义.It's hard to define exactly what has changed.很难解释清楚到底发生了什么变化....
She decided hitchhiking was her best method of escape.她认定搭便车是自己最好的逃跑方法。You're opening the door to trouble by hitchhiking.沿途搭车会滋生事端.Hitchhiking effects also play a role in experiments with marker genes.附加效应在以标记基因作试验中...