朋友 1.(有交情的人) friend 与...交朋友 make friends with; 酒肉朋友 fair-weather friend; 阔朋友 a friend at court; 患难中的朋友, 才是真正的朋友。 a friend in need is a friend indeed. 朋友间不分彼此。 between friends all is common.2.(恋爱对象) boy friend; girl friend
量热计能当量 energy equivalent of calorimeter; energy equivalent of calorimetre
质能当量原理 mass energy equivalence principle; principle of equivalence of mass and energy
恭维话不能当饭吃 praise is not pudding; praise makes good men better and bad men worse
漂亮不能当饭吃 beauty unaccompanied by virtue is as a flower without perfume