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An infestation is when a place gets taken over by a large number of unwanted pests, like insects, rats, or weeds — for example, "a infestation" means a building has way too many living in it. It's always about something unwanted spreading and multiplying somewhere it shouldn't.
（害蟲等）大量入侵、肆虐
組成in- (into) + fest (from a Latin word meaning hostile/attacking) + -ation.
同家族的字
- infestshares the root "infest"
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
infestationnoun/ˌɪnfɛsˈteɪ̯ʃən/
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The presence of a large number of pest organisms in an area or field, on the surface of a host or anything that might contact a host, or in the soil.
- Guatemalan snowpea production has continually been harmed by insect and disease infestations.
- You've probably heard about Beemageddon. Over the past few years, colony collapse disorder – thought to be brought on by a pernicious combination of overwork, bad weather, pesticides and infestations of parasitic varroa mites – has been threatening to wipe out honeybees all over the world, and with them many of our food crops.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。