Quadrivalence
n. 四价\\n[医] 四价
🗣️ 情景例句
Your birthday is tomorrow, isn't it?
你明天生日 ，是吗？
May I take your message?
你需要留言吗？
At least sorting out the things she should have discarded years ago was now being made easier for her.
这样一来，她倒是容易将那些几年前就该扔掉的东西找出来了。