解释:使用毒性大的药物治疗疾病时,病情十成中只能去掉六成就要停药,以免伤害正气。
The most exciting aspect of chemistry is the ability to create new molecules that have never existed before.
艺术应该让舒适的人不安,让不安的人舒适。
We don't inherit the earth from our ancestors; we borrow it from our children.