Kay has no affectation at all.

凯一点也不做作。

The subject is of no interest to me at all.

我对此课题一点也不感兴趣。

He seemed to feel no remorse at all.

他当时似乎一点也不感到懊悔。

Don't bother if it's too much trouble. — No trouble at all.

这事要是太麻烦，你就别费神了。——不，一点也不麻烦。

It is that even to this day bears have short tails, hibernate all winter, and have no love at all for fox.

这就是为什么即使现在熊也只有短短的尾巴，整个冬天都冬眠，而且一点也不喜欢狐狸。