泼出去的水

pō chū qù de shuǐ

spilt water

(fig.) sth that can not be retrieved; spilt milk

泼

pō

to splash

出

chū

variant of 出[chu1] (classifier for plays or chapters of classical novels)

去

qù

to go

的

de

of; ~'s (possessive particle)

水

shuǐ

water