Diphaser
二相發(fā)電機(jī)
??? 情景例句
It's seventy-five cents for adults and thirty cents for children under twelve.
大人75美分，12歲以下的小孩30分。
Have you taken a bus?
你坐過(guò)汽車嗎？
How long are you staying in Xi'an?
你要在西安呆多久？