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Definitions2 characters
xin1 ku3
exhausting/hard/tough/arduous/to work hard/to go to a lot of trouble/hardship(s)
Usage•••frequent
Pronunciations

As word

1
xin1
exhausting/hard/tough/arduous/to work hard/to go to a lot of trouble/hardship(s)
2
ku3
exhausting/hard/tough/arduous/to work hard/to go to a lot of trouble/hardship(s)