Tian
(
天
)
Tian
(
天
)
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Vocabulary
HSK 7–9 ③
Day 8
万无一失
New
万无一失
万无一失
萬無一失
w
à
nw
ú
-y
ì
sh
ī
absolutely safe, foolproof
idiom
Again
1
Hard
2
Good
3
Easy
4
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