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
Thanks a lot.
十分感谢。
It's difficult to make a decision whithout knowing all the facts.
不了解所有事实而做出决定是困难的。
so she sat down and accepted a cup of very strong tea, while he telephoned the police.
于是坐了下来，喝了一杯浓茶。与此同时，看门的人给警察挂了电话。