N,n-dimethylformamide(dmf)
[化] N,N-二甲基甲酰胺
🗣️ 情景例句
Have you ever been there?
你去过那儿吗？
It's a shame this machine is so slow.
真遗憾，这台机器太慢了。
Have they ever been there before?
他们以前去过那儿吗？