traffic light

US /ˈtræfɪk laɪt/

UK /'træfɪk laɪt/

A1 初級
n.名詞紅綠燈
The traffic light malfunctioned, which caused a gridlock at the intersection.

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優雅的宇宙02 (The Elegant Universe 02)

48:42優雅的宇宙02 (The Elegant Universe 02)