Ethionic acid
[化] 乙二磺酸
🧩 词语组成解析
🗣️ 情景例句
But I think he was nervous tonight.
但我想他今晚有点紧张。
A colt you may break,but an old horse you never can.
小驹犹可练，老马最难驯。
We should save unnecessary expenses.
我们应节省不必要的开支。