—— 请按键盘 空白键 开始游戏 ——

The safety and efficacy of a vaccine are the most important criteria in its development.
疫苗的安全性和有效性是其研发中最重要的标准。
From that day on, if I was going somewhere, I was running.
作家是一个写作的人,而不是一个被写的人。