中文词 · Chinese word
苦心
kǔ xīn — painstaking effort; to take a lot of trouble; laborious at pains
HSK 3.0 L7, HSK newest L7 · study the lists
中文词 · Chinese word
kǔ xīn — painstaking effort; to take a lot of trouble; laborious at pains
HSK 3.0 L7, HSK newest L7 · study the lists