变成另一个点，无论如何，这就是原点，最后一条边，y=0，一直变化，最终变成了v=0，and，x，varies，just，becomes，v，equals，zero。,所以，在变量替换的过程中，这个正方形变成了三角形。

So anyway, this is the origin, and then the last side, y equals zero, x So, somehow, in the change of variables, this square becomes this triangle.

youdao

它一直延伸至露台和两个游泳池——一个沿着建筑长边方向的狭长泳池，另一个是三角形水池。

It leads out to the terrace and its two swimming pools - a long narrow pool for lengths, and a triangular padding pool.

youdao

它一直延伸至露台和两个游泳池——一个沿着建筑长边方向的狭长泳池，另一个是三角形水池。

It leads out to the terrace and its two swimming pools - a long narrow pool for lengths, and a triangular padding pool.

youdao