Every actor ought to know his lines backwards before he goes on stage,as nervousness may make him forgetful.所有演员在上台前都应当把台词记得滚瓜烂熟,因为一紧张就容易忘词。He just released his hold and toppled slowly backwards...他刚一松开手就缓缓向后倒下。A hedgeho...
Draw the floss backwards and forwards between the teeth.将牙线在齿间来回拉动。He works backwards, building a house from the top downwards.他把工序倒过来了，从上往下建房子。The third wave was so strong it knocked me backwards.第3波浪太大了，把我打了回去。...
以硫酸氢钾为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using potassium bisulfate as the catalyst.以硫酸高铈为催化剂,正丁酸和异戊醇为原料合成了正丁酸异戊酯.Isoamyl butyrate was synthesized by using ceric sulfate as the catalyst.以硫酸铈铵为催化剂,...
From Wrexham centre take the Chester Road to the outskirts of town.从雷克瑟姆市中心出发，沿着切斯特路到达市郊。The doctor says that Mrs. Chester will pull through.医生说切斯特夫人会脱险的。But if I hadn't met Chester, he'd of got me sure. "可是,如果...
在氨基糖生物合成方面,工作做得很少.Little work has been done on amino sugar biosynthesis.氨基转移酶分布在细胞质 、 叶绿体和微体中.Amino transferases are located in the cytoplasm, chlorplasts and microbodies.在脱氨作用中, 分子 含氨基 的部分被移去.In deamination, the nitroge...
一犯错误可能当天就会被开除。People who make mistakes can be given the sack the same day.他近来老犯错误，胆子也开始变小了。Lately he'd been making mistakes; his nerve was beginning to go.你会因自己的谎言而犯错误。Your own lies will trip you up....