地球是一个动态的物体，其表面在不断变化。
The general will is always right， but the judgment which guides it is not always enlightened.
海洋将我们所有人联系在一起；它的挑战需要全球解决方案。
聪明好学，不以向地位低下的人请教为耻，所以称他为“文”。
The dairy industry is related to national health. We must hold ourselves to the highest standards.