In international trade, a country should specialize in the production of goods for which it has a comparative advantage, and trade with other nations to maximize overall economic welfare.

It's not what you're looking for trouble, but something that you're not sure of, but in fact, it's not.

即使是最坚强的灵魂，也会被爱击垮。

The purpose of morality is to teach you, not to suffer and die, but to enjoy yourself and live.

The strength of a response tendency depends on the amount of reinforcement received.

真正的领导力是为他人服务，而不是为自己。

可持续性是水产养殖的未来，我们必须投资于环保技术。