He has been slaving in the garden for hours.他在花园里干了数小时.He stares at the hundreds of workers slaving away in the intense sun.他凝视着在炎炎烈日下辛苦劳作的几百名工人。When you're busy all day the last thing you want to do is spend hours ...
法国人觉得好笑的笑话，英国人不一定会笑。The British don't laugh at the same jokes as the French.他突然放声大笑，好像讲了什么好笑的事似的。He burst into a high-pitched laugh, as though he'd said something funny.这可不是什么好笑的事.This is no laughing matter....
The creating course of chlorine water and the vacuum dechlorination process was briefly introduced.简要介绍了氯水产生的过程及真空脱氯工艺.The main way for the reductive dechlorination of chloralkane is the direct transfer of electron.电子直接转...