Polyborane
聚硼烷
🗣️ 情景例句
Chairman Mao said it is necessary to drill as much as possible.
毛主席说，反复操练是非常必要的。
We are happy to be of help.
我们十分乐意帮助。
Buried somewhere in deep grass there is a rusting lawn mower which I have promised to repair one day.
深草丛中的某个地方有一台正在生锈的割草机，那就是我曾答应某日要修理的割草机。