Pentadecanone
十五烷酮
🗣️ 情景例句
If there's anything you need, please call me.
假如你们需要什么， 请打电话给我。
No. I've been visiting relatives.
没有，我走亲戚去了。
Don't you think we should add a sentence here like this?
难道你不觉得我们应该在这儿加上一句话？