n. 

;发现;确认
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nitric oxide,
Nitricide,
nitrid,
nitridation,
nitride,
nitrided,
nitrides,
nitriding,
nitridize,
nitriferous,
相似单词
ascent,
ascents,
ascertain,
ascertainable,
ascertainableproduction,
ascertainment,
ascesis,
ascetic,
ascetical,
ascetically,