Phosphobenzene
偶磷苯
🗣️ 情景例句
You first, Audrey.
你先来， Audrey。
How long did it last?
持续了多久？
but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty.
但每年还要派狗到雪山地里去帮助那些遇到困难的旅游者，