We don't know what the true difference of these two population parameters are.

我们不知道这两个人口参数的真正区别是什么。

The true difference in weight loss between going on the low-fat diet and not going on the low-fat diet.

进行低脂饮食和不进行低脂饮食之间减肥的真正区别。

And so, what this is giving us is actually a confidence interval for the true difference between the populations.

因此，这给我们的实际上是人口之间真实差异的置信区间。

Madison said, I consider the difference between a system founded on the legislatures only, and one founded on the people, to be the true difference between a treaty and a constitution.

“我认为，建立在国会基础上的制度与建立在人民基础上的制度之间的区别才是条约与宪法之间的区别。”

The schoolchildren that come here to the wildlife park, all of them go away learning the messages that we know for sure are going to make a true difference to the animals back out into the wild.

来到野生动物园的小学生，他们都离开了，学习我们确定的信息将对动物产生真正的影响回到野外。