keystone

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

合作仍然是政府全政策的基本原则。

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

谋艺术，一是“”谋，选准问题的重、热、难作出科学的谋；

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形象的前提,是找出自己的优势和发展重。