As an expert in English idioms and phrases, I can tell you that "crying over spilt milk" is a common idiomatic expression that means to be upset or worried about something that has already happened and cannot be changed. It suggests that it's pointless to lament over past mistakes or misfortunes, as doing so won't alter the situation.

The phrase is often used to encourage people to let go of regrets and to focus on the present or future instead of dwelling on what cannot be undone.

Now, to translate this into Chinese:

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cry over spilt milk definition. To dwell pointlessly on past misfortunes: ��I know you wish that you'd handled the project more efficiently, but there's no use crying over spilt milk.��read more >>