when pigs fly
常见例句
- She will come to your birthday party when pigs fly.
她是不会来参加你的生日聚会的，除非太阳从西边出来。 - When pigs fly : From its apparent epicenter in Mexico, swine flu has taken flight across the oceans.
猪飞的时候：从墨西哥明显的疫中区，猪流感搭乘飞机越过了海洋。 - 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，那猪都会飞了。
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