| 释义 |
laughing gas ˈlaughing ˌgas noun [U] INFORMAL ► F0 NITROUS OXIDE(Cf. ↑nitrous oxide): a type of gas that is used as an anaesthetic (= a substance that stops pain)Thesaurus+: ↑SurgeryThesaurus+: ↑Specific chemicals, chemical compounds and gases , ↑Substances and structures in the body , ↑Types of chemical |