Eco
abbr. 電子耦合振蕩器（Electron-Coupled Oscillator）；環(huán)境控制組織（Environmental Control Organization）；經(jīng)濟合作組織（Economic Cooperation Organization）
??? 情景例句
And don't forget to invite Susan for dinner.
別忘了請Susan來吃晚餐。
I'm sorry to have kept you waiting.
很抱歉，讓你久等了。[分詞作狀語]
Certainly!said her mother.
“當然可以！”她媽媽說。