retain的常用短语：
retain on〔upon,over〕 (v.+prep.)
对…保持… keep (sth such as influence) over (sb or sth)
retain sth on〔over〕 sth
How does an aging politician retain his hold on the loyalty of the voters?一个年迈的政客是怎样使选民继续支持他的呢?
retain的用法例句：
1. Daily facial exercises help her to retain the skin's elasticity.
每天做面部运动帮助她保持皮肤弹性。
2. Disney will retain a 51 percent controlling interest in the venture.
迪斯尼将保留该项目51%的`控股权。
3. Vegetables should retain some firmness and should not be soggy and waterlogged.
蔬菜应保持一定的硬挺度，不应潮乎乎的浸透了水。
4. He decided to retain him for the trial.
他决定聘请他为出庭律师。
5. He is likely to retain the England captaincy.
他有望继续担任英格兰队队长。
6. to retain your independence
保持独立
7. He has managed to retain most of his fortune.
他设法保存了他的大部分财产.
8. We shall retain our rights.
我们将保留我们的权利.
9. China dishes retain heat longer than metal pans.
瓷器盘子比金属盘子保温时间长.
10. Retain copies of all correspondence, since you may need them at a later date.
要保留好所有信件的副本，日后可能会用到。
11. Native people were allowed to retain some sense of their traditional culture and religion.
当地原住民获准可以保留一些自己的传统文化和宗教。
12. This season I expect us to retain the championship and win the European Cup.
这个赛季我期待我们能够保住冠军头衔，赢得欧洲杯。
13. How does an aging politician retain his hold on the loyalty of the voters?
一个年迈的政客是怎样使选民继续支持他的 呢 ?
14. He drove the idea in somehow, and hoped that his pupils would retain it.
他设法灌输这一概念而且希望他的学生们记住它.
15. They built a wall round the shore of the lake to retain the water.
他们沿着湖边筑起一道堤来挡水.