a cat depicted with a broad fixed grin, as popularized through Lewis Carroll's
柴郡猫(总咧嘴笑,通过刘易斯·卡洛尔的《艾丽丝漫游奇境记》[1865] 为大众所熟知)。
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grin like a Cheshire cat have a broad fixed smile on one's face 咧着嘴笑
"late 18th cent.: of unknown origin, but it is said that