Polytopic
多处发生的
🗣️ 情景例句
You don't need to do that, Grandpa.
你不用这样，爷爷。
May I help you?
要我帮忙吗？
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。