苦苦

kǔ kǔ sī suǒ

苦苦思索

ponder hard

kǔ kǔ děng dài

苦苦等待

strenuously wait

kǔ kǔ āi qiú

苦苦哀求

entreat piteously

kǔ kǔ quàn shuō

苦苦劝说

implore

kǔ kǔ qí qiú

苦苦祈求

persistently pray