苦海茫茫 kǔ hǎi máng máng 🔊 sea of bitterness is vast (idiom) + Keep this word Meanings kǔ hǎi máng máng sea of bitterness is vast (idiom) Its characters 苦kǔbitterHSK 4海hǎioceanHSK 3茫mángvast, with no clear boundary