我猛力推开窗子,让烟散出去。
确保有办法让烟雾迅速散出房间。
Make sure that there is a way for smoke to move quickly out of the room.
The concept of regression goes back to the mathematician Gauss, who talked about fitting a line through a scatter of points.
回归这个概念要追溯到数学家高斯,讨论的是从若干散点中切合出一条直线
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