Thee students asked:can we make a projection line to the Equator line on a plane?

同学们又问了：我们可以在这个切面上做一个到赤道线的垂线吗？

youdao

The equator is an imaginary line around the middle of the earth.

赤道是一条假想的环绕地球腰部的线。

《牛津词典》

Although much of south America, parts of Africa and all of Australia lie south of the equator, most of the world's land lies north of the line.

尽管绝大部分南美洲、部分非洲以及整个澳洲位于赤道以南，但地球上的大部分陆地还是分布在赤道以北。

youdao

One line is the equator. It is an imaginary line around the widest part of the Earth.

VOA: special.2010.07.14

If there were no correlation between prosperity and distance from the equator, we would expect the green line to be centered at zero with random oscillations due to noise in the data.

FORBES: The correlation is there.