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二氧化氮
èryǎnghuàdàn
1.
nitrogen dioxide
Character Breakdown
二
èr
two; twice
HSK 1
2 丶
氧
yǎng
oxygen
HSK 6
10 丶
化
huà
to change, to convert, to reform; -ize
HSK 3
4 丶
氮
dàn
nitrogen
12 丶
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Chinese