A single mosquito can infect a large number of people.

一只蚊子就能传染很多人。

objects used by an infected person.

一名感染者使用过的物品。

people infected with HIV.

HIV感染者。

The birds infect the milk.

鸟污染了牛奶。

For an instant I was infected by her fear.

一瞬间，我被她的恐惧所感染。

He thought they might infect others with their bourgeois ideas.

他认为他们可能用资产阶级思想去影响别人。

This virus infected thousands of computers across the U.S. and Europe within days.

这种病毒几天之内就使美国和欧洲成千上万台电脑中毒。