| 单词 | 已退化 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔Manx cat〕Any of a breed of the domestic cat having short hair, usually solid color, and an internal vestigial tail.马恩岛猫：任一种长有短毛，通常有纯色毛皮，体内留有已退化尾巴的家养猫种美国传统〔rudimentary〕Some insects have only rudimentary wings.有些昆虫的翅膀已退化。韦氏高阶〔vestigial〕Although it cannot fly, the bird still has vestigial wings.尽管不能飞，但这种鸟仍有已退化的翅膀。韦氏高阶 |
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