这条线在地理上是条平行线,它是个东西向的圈。

OK,so this guy,so that's a piece of what's called a parallel in geography That's a circle that goes east-west.

youdao

这条线在地理上是条平行线,它是个东西向的圈。

OK,so this guy,so that's a piece of what's called a parallel in geography That's a circle that goes east-west.

youdao