Pentaborane
n. [化]戊硼烷(用作火箭推进剂)
🗣️ 情景例句
Aren't you excited about that?
你不感到兴奋吗？
That cat judged the distance before he leapt across the ditch.
猫在越过沟渠以前便判断好其距离了。
What's the time?
几点了？