常見例句雙語例句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(qū)，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。blog.onlycollege.com.cn 返回 when pigs fly