尽管史密斯跑得很卖力气，但是琼斯一直紧跟其后.

example：Although Smith was running hard，Jones was breathing down his neck.

鲍勃工作很卖力气，他还主动加班工作。

Bob is working very hard and he even offered to work overtime.

农民不仅更卖力气干活，而且常常起早贪黑地干也心甘。

The farmer not only worked harder, but often reveled in his longer hours.

这句话地意思是“你地工作还有改进地余地”，看儡脬可得卖力气地干活了！

There is room for improvement in your work It is not as good as it could be.