Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 7–9 ②
Day 33
过硬
New
过硬
过硬
過硬
gu
ò
y
ì
ng
rock-solid, able to stand the test
adjective
Again
1
Hard
2
Good
3
Easy
4
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