Dibutyl
[机] 二丁基
🗣️ 情景例句
Mr. Carlson is busy at the moment. May I help you?
Carlson先生现在正忙着呢。我可以为你效劳吗？
See you tomorrow.
明天见。
I had traced the cause of the trouble.
因为我找到了毛病所在。