The crude, wet benzoate ( 118 grams ) was disslolved with reflux in 1,400 ml methanol.将粗制 、 湿的苯甲酸酯 ( 118克 ) 回流着溶于140毫升甲醇中.Unimmunized contacts, especially infants, should receive 2 to 4 ml. of hyperimmue gamma globulin i...
记住今天晚上把钟拨回 ( 一小时 ).Remember to put your clocks back ( one hour ) tonight.我的表快了, 需要拨回五分钟.My watch is fast; it needs putting back five minutes.他的手表快了,于是他把它拨回三分钟.His watch was fast so he put it back three minutes....
The Yellow River surges onward like ten thousand horses galloping.黄河以万马奔腾之势滚滚向前.The Yellow River changed its course to the sea on 26 occasions.黄河入海有过26次改道.The Yellow River has been harnessed.黄河已被治理....