Grain isn't just a commodity; it's the foundation of civilization.
谷物不仅仅是一种商品,它是文明的基础。
We must listen to the science and act decisively to preserve marine biodiversity.
艺术总是要反抗些什么。如果它不再反抗,它就不再是艺术。
与孩子们在一起,灵魂得到治愈。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.