為場合而穿：一件衣服與一套規格
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a formal gown · noun
A long or specially made dress that a woman wears to a formal dinner, party or other social event in the evening.
晚禮服（一件）
Picture the half hour before a formal evening event: the day's clothes come off, and something kept for occasions goes on. Both meanings live in that moment, seen from different distances. Step back and look at the whole room and the words name what everyone is expected to wear. Step close to one person and they narrow to the single long dress she has on.
可以想成正式晚宴開始前的那半個小時：白天的衣服脫下來，換上專門留給場合的那一套。兩個意思都在這個畫面裡，只是距離不同。往後退，看整個宴會廳，這個詞講的是大家該怎麼穿；走近一個人，它就縮小成她身上那件長禮服。
One branch