Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 7–9 ③
Day 38
苦心
New
苦心
苦心
k
ǔ
x
ī
n
painstaking effort, painstakingly
noun·adverb
Again
1
Hard
2
Good
3
Easy
4
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