"The true challenge of writing is not in finding the right words, but in uncovering the truth they must carry."

疫苗的安全性和有效性是其研发中最重要的标准。

Success is not an accident. It is a choice， a discipline， a learning process， a sacrifice， and most of all， a love for what you are doing.

我们必须在经济增长和环境管理之间取得平衡。