Pentaborane 9
[化] 戊硼烷9
🧩 词语组成解析
n. [化]戊硼烷(用作火箭推进剂)
🗣️ 情景例句
You've been a great help.
你帮了大忙。
These clothes are too long , they need to be taken up.
这些衣服太长了需要去改一下。
I felt sure I would never be able to close the case again.
我相信那箱子再也关不上了。