Spiroheptane
螺[3.3.]庚烷
🗣️ 情景例句
There are thirty-three thousand three hundred and thirty-three feathers on that bird's throat.
那只画眉鸟的喉咙上有三万三千三百三十片羽毛。
Your work seems not satisfactory.
你的工作看起来并不令人满意。
Never mind. So now you know what you should do.
不要紧。好了，现在你知道该怎么做了吧。