Definition [Cambridge Dictionary]: 

1. to clean something, especially a floor by using a brush to collect the dirt into one place from which it can be removed 【打扫】

2. to move, especially quickly and powerfully 【（目光）扫视，（灯光）掠过；（快速地）带走，卷走；（尤指快速有力地）移动，冲】

3. to quickly spread through and influence an area 【风行，风靡，迅速蔓延，迅速传播；席卷;横扫】

4. to travel across all of an area, especially when looking for something 【搜寻】

5. to win all the parts of a competition, or to win very easily【大获全胜，轻易获胜】

Example:

I let them sweep the chimney.

我让他们打扫烟囱。

Strong winds regularly sweep the islands.

这些岛屿上经常刮大风。

Independence is sweeping across the continent.

独立运动席卷这片大陆。

A flu epidemic is sweeping through Moscow.

流感正在莫斯科迅速传播。

The detectives sweep the room for hair and fingerprints.

侦探在房间里搜寻头发和指纹。

We knew we had to sweep these three home games.

我们明白必须要赢得所有这3场主场比赛。