Iec
[化] 离子交换色谱法
🗣️ 情景例句
It's because I have a bad cold.
那是因为我患了重感冒。
Mother begins baking cookies two weeks before Christmas.
自圣诞节的两周以前，母亲就开始做小甜饼了。
If a citizen's complaint is justified, the Ombudsman will act on his behalf.
如果公民的意见正确，司法特派员便为他伸张正义。