氧還 的释义 | Babel Free
jɑŋ²¹⁴⁻²¹ xu̯än³⁵例句
“氧還反應”
“氧还反应”
CEFR 等级
C2
精通
该词属于CEFR C2词汇——精通水平。
该词属于CEFR C2词汇——精通水平。
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