Tetraborane
四硼烷
🗣️ 情景例句
We finished addressing over three hundred envelopes.
我们写了三百多个信封地址了。
I asked him to check it for me, but he wouldn't.
我请他帮我检查，但是他不肯。
Yesterday the firemen examined the ground carefully, but were not able to find any broken glass.
昨天，消防队员仔细查看了地面，但未能发现碎玻璃。