美的东西不会自己显现出来,需要有人去发现和彰显
The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.
我们回收和循环利用的每一块塑料都是迈向更清洁地球的一步。
Nothing is a waste of time if you use the experience wisely.