Polypetipe
缩多氨酸
🗣️ 情景例句
which has been vacant for over a year now,
已空了一年多，
Don't trouble trouble until trouble troubles you.
不要自寻烦恼。
I've got three weeks altogether. What do you suggest I see?
我总共有三周时间。你建议我看些什么呢？