Tian
(
天
)
Tian
(
天
)
App Store
Google Play
Vocabulary
HSK 7–9 ②
Day 29
钻研
New
钻研
钻研
鑽研
zu
ā
ny
á
n
to delve into, to study in depth
verb
Again
1
Hard
2
Good
3
Easy
4
Previous word
Space flip · 1–4 grade · ← → move
Next word