一个人如果对自己掌握的事实没有把握，就绝不该随便批评。

One should never criticize if one is not sure of one's facts.

他朝街上望去，一个人也没看见。

He looked up the street, but there was no one in sight.

我好像看见阴暗处站着一个人。

I thought I saw a figure standing in the shadows.

一个人只要避免紧张，健康状况就会改善。

A person's health improves with the avoidance of stress.

在证实一个人有罪之前，我们必须假定其无辜。

We must presume innocence until we have proof of guilt.

在这个国家，一个人在被证实有罪之前，就是清白的。

In this country, you are innocent until proved guilty.

一些儿童进入少年期会完全变成另一个人。

Some children undergo a complete transformation when they become teenagers.

她是最直言不讳地批评执政党的一个人。

She is one of the ruling party's most outspoken critics.

你能不能从你手下抽一个人过来帮帮我们？

Could you spare one of your staff to help us out?