核心畫面
Picture clean air, water, or land being fouled by waste, smoke, or chemicals until it's no longer safe to use. At core it's the dirtying itself — and, by a short step, the dirty stuff that does it.
可以想成乾淨的空氣、水或土地，被廢料、煙、化學物質弄髒，髒到不能安全使用的那個過程。核心畫面比較像「把原本乾淨的東西…更多收起
可以想成乾淨的空氣、水或土地，被廢料、煙、化學物質弄髒，髒到不能安全使用的那個過程。核心畫面比較像「把原本乾淨的東西弄髒、弄到有害」這件事本身。From the word’s history
From Latin polluere 'to soil, defile, make unclean.' Pollution is the noun of that act — the making-dirty of something that should have stayed clean.
來自拉丁文 polluere「弄髒、玷污」。pollution 就是這個動作的名詞：把本該乾淨的東西弄髒、弄到不再安全。
etymonline.com/word/pollute (Latin polluere 'to soil, defile')
原始詞典資料5 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。
pollutionnoun/pəˈljuːʃən/
- 1
Physical contamination, now especially the contamination of the environment by harmful substances, or by disruptive levels of noise, light etc.
- Pollution levels are almost always higher in cities rather than the countryside, what with the cars, industry and so on.
- If successful, Edison and Ford—in 1914—would move society away from the[…]hazards of gasoline cars: air and water pollution, noise and noxiousness, constant coughing and the undeniable rise in cancers caused by smoke exhaust particulates.
- 2
Something that pollutes; a pollutant.
- 3
archaicThe desecration of something holy or sacred; defilement, profanation.
- Men who attend the Altar, and should most / Endevor Peace: thir strife pollution brings / Upon the Temple it self […].
- [T]he most gallant knights that ever wielded sword wasted their lives away in a struggle to seize it and hold it sacred from infidel pollution.
- 4
archaicThe ejaculation of semen outside of sexual intercourse, especially a nocturnal emission.
- When occasioned by a voluntary act it is called, simply, Pollution or Masturbation (q.v.); when excited, during sleep, by lascivious dreams, it takes the name Noctur'nal pollution, Exoneiro'sis, Oneirog'mos, Oneirog'onos, Gonorrhœ'a dormien'tium, G. oneirog'onos, G. Vera, G. libidino'sa, Proflu'vium Sem'inis, Spermatorrhœ'a, Paronir'ia salax, Night pollution.
- According to Billuart and other theologians, pollution in sleep is not sin, unless voluntarily caused; if, however, it begins in sleep, and is completed in the half-waking state, with a sense of pleasure, it is a venial sin.
- 5
Moral or spiritual corruption; impurity, degradation, defilement.
- She condescended to wait on them at Pemberley, in spite of that pollution which its woods had received.
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。