Check map orientation each time compass is used.
每次使用指南针时，检查地图的上的方位。
Do you know the time and place of the International Student Orientation Meeting?
你知道国际留学生入学见面会的地点和时间吗？
The orientation of stress field isn't all unchanged in the space and time.
应力场方向在时间和空间上并不是一成不变的。
The orientation of stress field isn't all unchanged in the space and time.
应力场方向在时间和空间上并不是一成不变的。
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