Now, if a problem gives you neither the orientation of a curve nor that of the surface then it's up to you to make them up.

现在有一个问题，就是既没有给曲线也没有给平面定向，那要有你们自己去决定。

youdao

Now, if a problem gives you neither the orientation of a curve nor that of the surface then it's up to you to make them up.

现在有一个问题，就是既没有给曲线也没有给平面定向，那要有你们自己去决定。

youdao