重点讲解：
1. lag behind 落后；赶不上；
例句：We still lag behind in this respect.
在这方面，我们还比较落后。
2. by far 到目前为止；
例句：It was by far the worst speech he had ever made.
这是他迄今发表过的最差的演讲。
3. according to 据…所说；依据，依照；
例句：The policeman quickly blocked in the criminal according to the witness.
根据目击者的叙述，警察很快就勾画出那个罪犯的轮廓。
4. apply for 申请；请求；
例句：They apply for permission to use the tennis court.
他们申请借用这个网球场。
5. in addition 另外；加之；除…之外；
例句：In addition, we supply small parts for replacement.
此外，我们还提供备用小零件。
6. benefit from 获益；对…有益；有利于；
例句：Many families in need benefit from his charity.
许多有需要的家庭因为他的善举而受益。
