- 1
A poisonous gas. In war, especially the First World War, it was used as a chemical weapon because it hurts the lungs, and people may not notice at first — it can smell a little like new-cut grass or musty hay, which is a cruel trick. In industry it is still made and used to build other chemicals, under tight control, because breathing it is very dangerous. It is a specialist word: soldiers’ history, chemistry, safety signs. You will not hear it in daily chat. The name is about light, not about the element ; though actually, the two words sit near each other on the page and students often mash them together.
光氣
組成From Ancient Greek phôs, “light”, plus -gene, because it was first made with sunlight.
同家族的字
- phosphorusboth take Greek phôs, “light”, in the name — not the same substance
- photographthe photo- in photograph is the same Greek word for “light”
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。
phosgenenoun/ˈfɒsd͡ʒɪn/
- 1
chemistrynatural-sciencesorganic-chemistrycarbonyl chloride
- “‘Poison gas’?” A new one on Lew. But Dr. De Bottle had taken on a somber look. “Phosgene.”
- Remote and cold, H-276 is nevertheless of interest due to phosgene gas in its thick chlorine atmosphere. This could indicate primitive chlorine-based life. However, no detailed study has been completed.
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。