He can get the wheels off a car in less than a minute.他能一分钟之内把汽车的四轮全卸下来

less than不到，少于

It was nothing less than a miracle.

那完全是个奇迹。

The audience was no less than five thousand.

听众有五千人之多。

You have no concern for safety.你一点都不注意安全

concern for对 ... 的关心； 忧虑

His concern for the poor is only a pose.

他对穷人的关心只不过是做做样子罢了。

The teacher showed particular concern for the disabled child.

老师特别关心那个残疾儿童。

Why are you trying to sneak around and hide things from me?你干嘛要在我面前藏藏掩掩的?

sneak around鬼鬼祟祟

"We have to sneak around," he cried.

“我们只好偷偷摸摸，”他嚷起来。

I had to sneak around and hide my smoking from my parents.

为了抽烟我必须鬼鬼祟祟地躲开我的父母。