B-acid
[化] B酸; 1-氨基-8-萘酚3,5-二磺酸
🧩 词语组成解析
🗣️ 情景例句
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
I was just on time.
我刚好赶上。
Number 64 Middle School.
64中学。