Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 7–9 ③
Day 18
衰减
New
衰减
衰减
衰減
shu
ā
iji
ǎ
n
to attenuate, to weaken
verb
Again
1
Hard
2
Good
3
Easy
4
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