Iec
[化] 离子交换色谱法
🗣️ 情景例句
Tom doesn't have a steady girlfriend at the moment.
汤姆眼下还没有一个已确定关系的情侣。
Do you have your driver's license?
你有驾驶执照吗？
I don't know. sir.
我不知道，先生。