The less you know about him, the better.关于他你知道得越少越好
know about知道； 了解； 听说过有关 ... 的情况

I'd love to know about the plan.

我想知道这个计划。

He's such an ostrich he doesn't want to know about his wife's love affairs.

他真是自己骗自己--对妻子有外遇不闻不问。

I think the pills belonged to my mother.我觉得药片可能是我妈妈的

belong to属于； 为 ... 之一员

The more help a man have in his garden, the less it belong to him.

花园里帮忙的人手愈多，就愈不成为自己的花园。

You and I belong to different political camps.

你和我属于不同的政治阵营。

That's a bit of a leap, don't you think?你这思维跳跃得也太快了吧

a bit of 一点儿的

Through a chink she could see a bit of blue sky.

从缝隙中他可以看到一线蓝天。

Their refusal to sign the contract has put us in a bit of a bind.

他们拒绝签约，从而使我们的处境有些困难。