Tetraborane
四硼烷
🗣️ 情景例句
Please keep off the grass.
请勿践踏草地。
You can't always get what you want.
天不从人愿。
As there are so many people about, the dogs have to be kept in a special enclosure.
由于来人太多，狗被关在专门的围栏里。