苦苦

kǔkǔ

strenuously; hard; persistently

* * *

ku3 ku3

strenuously, persistently, hard, painful

* * *

苦苦

kǔ kǔ

hard; strenuously

* * *

苦苦|苦苦 [kǔ kǔ] ► strenuously ► persistently ► hard ► painful