Mesylerythrol
赤消安
🗣️ 情景例句
Good-bye, Richard, and good luck. See you in two weeks.
再见， Richard， 祝你好运。两周后见。
I invited him last Thursday.
我上个星期四邀请他。
None of us is afraid of difficulties.
我们当中没有一个人害怕困难。