infest

动词 infest:

1. invade in great numbers
   同义词：overrun
2. occupy in large numbers or live on a host
   同义词：invade, overrun
3. live on or in a host, as of parasites

1. There is a warehouse infested by rats.
   那有一个大批老鼠出没的仓库。
2. It's a garden infested with weeds.
   这是杂草丛生的花园。

in.fest

v.tr.（及物动词）
in.fest.ed,in.fest.ing,in.fests
To inhabit or overrun in numbers large enough to be harmful, threatening, or obnoxious:
（害虫、盗贼等）大批出没于：大量地居住或出没于，数量大到有害、有威胁性或有毒的程度：
例句：
rats infesting the sewers; streets that were infested with drugs.
老鼠大量出没于下水道；大街上毒品泛滥

To live as a parasite in or on tissues or organs or on the skin and its appendages:
寄生于：在组织内、器官上、皮肤上和体表器官上象寄生虫一样生存：
例句：
livestock that were infested with tapeworms.
寄生了大量绦虫的动物

来源：
Middle English infesten [to distress]
中古英语 infesten [折磨]
from Old French infester
源自 古法语 infester
from Latin onfest3re
源自 拉丁语 onfest3re
from onfestus [hostile] * see g whedh-
源自 onfestus [敌意的] *参见 g whedh-

【引伸】
in.festa.tion
n.（名词）
infest.er
n.（名词）