Polyborane
聚硼烷
🗣️ 情景例句
I'm Ellen Stewart, Marilyn's mother-in-law.
我叫Ellen Stewart， Marilyn的婆婆。
Why are you so excited?
你干嘛那么激动？
The guards couldn't have been watchig very carefully.
警卫不可能一直认真地查看。