Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 4
Day 20
研制
New
研制
研制
研製
y
á
nzh
ì
to research and produce, to develop
verb
Again
1
Hard
2
Good
3
Easy
4
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Space flip · 1–4 grade · ← → move
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