when pigs fly
常见例句
- She will come to your birthday party when pigs fly.
她是不會來蓡加你的生日聚會的，除非太陽從西邊出來。 - When pigs fly : From its apparent epicenter in Mexico, swine flu has taken flight across the oceans.
豬飛的時候：從墨西哥明顯的疫中區，豬流感搭乘飛機越過了海洋。 - Example: The things you want to create is can only be complete when pigs fly.
例：你要是能那些事做完，那豬都會飛了。
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