Good can exist without evil， whereas evil cannot exist without good.

Collaboration between industry, scientists, and policymakers is essential for effective marine conservation.

明白事理的人使自己适应世界；不明事理的人想使世界适应自己。所以，所有进步都要靠不明事理的人。

君子作战虽然布阵，但还是以勇敢为本。