Pentaborane
n. [化]戊硼烷(用作火箭推进剂)
🗣️ 情景例句
I have three tonsillectomies set for Friday with Dr. Earl.
我安排好要和Earl大夫在星期五进行三个扁桃腺切除手术。
Move over!
坐过去一点！
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？