The past is always tense, the future perfect.
The meaning of life is contained in every single expression of life. It is present in the infinity of forms and phenomena that exist in all of creation.
The language of DNA is universal, but its applications are deeply personal.
丙型肝炎的发现不仅仅是我个人的工作；它是数十年集体努力的结果。
纵然伤心，也不要愁眉不展，因为你不知是谁会爱上你的笑容。