单词 | nitrous oxide |
释义 | nitrous oxide nitrous oxide /ˌnaɪ.trəsˈɒk.saɪd/ aep /-ˈɑːk-/ noun [U] (INFORMAL ˈlaughing ˌgas) SPECIALIZED ► F0 a type of gas with a sweet smell that is used as a weak anaesthetic (= substance that stops pain), especially by dentistsThesaurus+: ↑Chemical elements |
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