Tetraborane
四硼烷
🗣️ 情景例句
Hi.
嗨。
Lock the stable door before the steed is stolen.
马未偷走前，厩门先锁上。
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，