重点讲解：
1. contribute to (为…)做贡献；
Their inventions have contributed to the development of electrical engineering.
他们的发明有助于电气工程学的发展。
2. in accordance with 按照；依据；
We should make decisions in accordance with specific conditions.
我们应当根据具体情况做出决定。
3. put one's mind to sth. 专心做；努力做；
I realised that if you put your mind to it, you can do almost anything.
我意识到，只要你用心去做，你可以完成几乎所有事。
4. withdraw from 退出(活动或组织)；
Any Member may withdraw from this Agreement.
任何成员均可退出本协定。