The existence of a legal system is a matter of social fact.
法律体系的存在是一个社会事实。
The beauty of chemistry lies in its ability to explain the world at the molecular level.
真相是,我们都在等待别人告诉我们自己是谁。
如果你想拥有从未有过的东西,你必须愿意做从未做过的事。
在药品生产中,质量绝不能因为速度而妥协。
The duty of a true patriot is to protect his country from its government.