当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.友情是理解，不是妥协；是原谅，不是遗忘。即使不联系，感情依然在...
We want to have more scientifically literate people running our television stations.我们想增加一些通晓科学的人手来运作电视台。He explained scientifically the most important questions of political economy.他科学地阐述了政治经济学中一些最重要的问题.The theory is n...