学习资料

[意       思]n. 预防，预防措施
[例]  I took an umbrella as a precaution. 我带了一把伞以防下雨。

更多意思

n.1.  预防措施，预防，防备
2.  （precautions）避孕措施

参考例句

1.	I took the precaution of locking everything in the safe.
	我把一切东西都锁在保险箱里以防万一。
2.	Proper precaution is prudent.
	正当的防备是明智的。
3.	It is a wise precaution to lock your door when you leave your house.
	离家时锁门是明智的预防措施。
4.	You should take an umbrella as a precaution .
	你应当带一把伞作防备。
5.	The polar explorers took every precaution to minimize the dangers of their trip.
	极地探险者十分小心，竭力使他们旅途中的危险减到最低限度。