x, y and z, in terms of t, are given here.

这是x、y、z与t的关系。

youdao

So, we have a function of x, y, z, t, and we have another function here.

有一个关于x,y,z和t的函数。

youdao

What I'm integrating to is f of x of t and y of t.

我积分的是f，y

youdao

What I'm integrating to is f of x of t and y of t.

我积分的是f，y

youdao