know fully well的意思|示意

However, everything is of a cyclic nature and you know fully well that your present one is about to end.

然而，一切都有一个循环的性质，你完全知道现在即将结束。

Well, we know the mass of the moon, the density and so forth, but don't think that you fully understand the properties of lunar green cheese, this is very dense cheese.

好吧，我们知道月亮的质量，密度等数据，但是不要觉得你完全理解月亮绿奶酪的属性，这是种非常致密的奶酪。

To understand and fully appreciate te jokes of vross -talk artists, listeners have to know very well what the comedians are talking about, and they also have to be fluent in Chinese.

要理解并真正的欣赏相声艺术家们所表演的笑话，听众必须很好的了解喜剧演员们在说些什么，并精通中文。