ensure 
英 [ɛnˈʃʊə]  美 [ɛnˈʃʊr] 
v. 保证，确保；保证获得

例句：
They said the moves were necessary to ensure peace and stability in the region. 

他们说这些行动是保证该地区的和平与稳定所必需的。

Unethical campaign tactics are often used to ensure victory in an election. 

选举中经常使用不道德的竞选手段，以确保获得胜利。

Safety ropes ensure that climbers are safe during the ascent. 

安全绳确保登山者在向上攀登时平安无事。

You should ensure you do not miss the deadline. 

你得保证不错过最后期限。