And that implies that since the quantity we want is given by this quantity, which is zero times a constant, the quantity we want is also zero.

因为我们需要的量，是由这个量乘以一个常数，因为这个量是零，因此我们需要的量也是零。

youdao

Explanation is useless, but the sensation remains and, with it, the constant attractions of a universe inexhaustible in quantity.

解释是毫无用途的，但是情感却会保留下来。有了这种东西，宇宙连续不断的吸引力在数量上依然不可穷尽。

youdao

So, in fact, you know, when you plug in these things, normally you get a quantity that's of a form, something times t plus a constant because that's what you plug into the equation of a plane.

事实上，代入这些之后，通常可以得到这种形式的值，有时候是t加上一个常数，因为这是你代入平面方程的。

youdao