Octanone
辛酮
🗣️ 情景例句
It's completely beyond my grasp.
我完全摸不着头脑。
The post office is in the middle of the block, You can't miss it.
那邮局就在街区的中间，很好找。
I don't like to be late. We begin classes at 8:00.
我不喜欢迟到。我们八点上课。