Iec
[化] 离子交换色谱法
🗣️ 情景例句
Let me just weigh it first.
请先让我称一称。
The doctor said I looked worried and nervous.
医生说我看起来太忧郁和紧张了。
What about your sister Kate? You didn't come together, did you?
你的妹妹凯特呢？你们不是一起进校的，对不对？