学习资料

[意       思]vt. 留住，挡住，拦住
[例]  This vessel won't retain water. 这容器盛不住水。
vt. 保持，保留
[例]  She retains a clear memory of her school days. 她对自己的学生时代有着清晰的记忆。
vt. 雇，聘
[例]  He retained the best lawyer in the state. 他聘请了该州最好的律师。
vt. 记住
[例]  Concentrated study will help you to retain knowledge. 专心学习有助于你记住知识。

更多意思

vt.1.  保持，持有，保留，继续拥有
2.  保持，继续容纳
3.  聘请（律师等）

参考例句

1.	These roses retain their scent.
	这些玫瑰花仍有余香。
2.	A dyke was built to retain the floods.
	修了一道堤坝挡住洪水。
3.	So treated flowers will retain their fresh beauty for a long time after gathering.
	经过这样处理的花朵采下后仍能长期保持鲜艳．
4.	China dishes retain heat longer than metal pans do.
	瓷碟子比金属盘保持热量的时间要长。
5.	He is 90 but still retain the use of all faculties.
	他已90高龄，但各种官能仍未衰退。