operate (v.) operate vi. 运转；动手术；起作用 vt. 操作；经营；引起；对…开刀；行动operant (adj.) operand (n.) operable (adj.) opera (n.) opera n. 歌剧；歌剧院；歌剧团 n. (Opera)人名；(意)奥佩拉openness (n.) openly (adv.) opening (n.) opener (n.) open-minded (adj.) open-handed (adj.) open-ended (adj.) open-air (adj.) open (adj.) open adj.开着的；开放的；公开的v.打开；张开；展开；摊开；开始(某事物)；开张；营业；以…开头；宣布启用n.户外；公开ope (adj.) opaque (adj.) opaque adj. 不透明的；不传热的；迟钝的 n. 不透明物 vt. 使不透明；使不反光