你不能等待别人来安排你的人生,自己想要的,自己争取。
To be free is not to have the power to do anything you want, but to have the power to do what is right.
劳动力市场在不断演变,我们的模型应反映这一点。
食品体系必须发展以满足不断增长的人口需求。