苦恼

(苦惱)kǔ nǎo

distressed; vexed

Example Sentences

这道数学难题他演算了整整一个下午依然毫无头绪，心里感到十分苦恼。

zhè dào shù xué nán tí tā yǎn suàn le zhěng zhěng yí gè xià wǔ yī rán háo wú tóu xù, xīn lǐ gǎn dào shí fēn kǔ nǎo.

He calculated this mathematical problem for a whole afternoon and still had no clue, and felt very distressed.

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