Triazaborane
[化] 三氮杂环硼烷
🗣️ 情景例句
How long is it going to take for me to get there?
到那里还需要多久时间
Which one is easier?
哪一个是较简单的？
No, more, about 130 years ago. Most of the slave owners were rich farmers who lived in the south. They wanted to keep their slaves.
不，还要早，大约130年前。大多数奴隶主都是住在南方的富有的农场主。他们想保留自己的奴隶。