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心
xin1
心
血
xue4
血
heart's blood
expenditure (for some project)
meticulous care
Examples
我们已经花了五个月的心血在这上面了。别这时候搞砸了。
Info
Wiktionary: 心血
MDBG: 心血
Examples with 心血 on
Tatoeba
Percentile: 54
(higher is more common)
Tags:
HSK6