Efc
abbr. earth fixed coordinate 固定坐标系; electronic feedback carburetor 电子反馈汽化器; engineered for color 彩色（电视机）工程; Evergreen Fir Corporation (initials) 常青枞树公司（组织名称的第一个字母）
🗣️ 情景例句
How's that again.
你再说一次？
I would like to place a station-to-station call.
我要打一个叫号电话。
It is the ideal condition of the 'equal start' which only our most progressive forms of modern education try to regain.
这就是我们最进步的现代教育试图恢复的“平等起步”的理想状况。