The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

最好的电影是那些你看完后久久不能忘怀的电影。

Fruit is a noble cause,the cause of flower is sweet,but still let me in the obscurity of the shadow of the dedication to do it cause leaf.

You can't manage what you don't measure.

应该引导孩子通过自己的活动去发现真理。

Music is the bridge between hearts.