Midnormal
垂直平分線
??? 情景例句
They're the ones.
找他們沒錯。
Are you in touch with him now?
你現在和他有聯系嗎？
He looked very well though he was rather thirsty, for he drank half a bottle of milk.
它看上去一切正常，只是口渴得很，喝了半瓶牛奶。