But in this study, researchers added a third variable, which made the learning process even more efficient.

但在这项研究中，研究人员增加了第三个变量，这使得学习过程更加有效。

But in order to do so, they must take into account a third variable: the different speeds of dragons themselves.

但为了解决这个问题，必须把第三个变量纳入考虑：不同飞龙之间的速度差异。

And the third variable is the banking sector stress.

第三个变量是银行业的压力。

So one is is that if I have some third random variable, let's say I have some third random variable that is defined as being the random variable x plus the random variable y.

所以一个是如果我有一些第三个随机变量，假设我有一些第三个随机变量被定义为随机变量 x 加上随机变量 y。