Hefeflavin
[医] 酵母黄素
🗣️ 情景例句
Yes?
什么？
The path of duty is the path of safety.
尽职的路是安全的路。
of a change of atmosphere, of a diversion of effort, is essential.
改变一下气氛，转移一下注意力，这是不可缺少的。