keystone

1.cooperation remains the keystone of the government's security policy.

合作仍然是政府全政策基本原则。

2.First, the brainman art means“idea”brainman.As a scientific brainman, he selects accurately the keystone, the hotspot, and the difficult problems.

参谋艺术，一是“点子”参谋，选准问题重点、热点、难点作出科学参谋；

3.The premise of designing and creatin g Chongqing's tourism image is to rec ognize its advantages and keystone o f devel-opment.

设计和塑造重庆旅游前提,是找出自己优势和发展重点。