过去是一个谜,我们都在试图拼凑它。
The past is a puzzle, and we are all trying to piece it together.
The most considerable difference I can see between men and animals is not in reason, but in the extent of the power of using it.
疫苗的安全性和有效性是其研发中最重要的标准。
I'm not a rapper, I'm a history maker.