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
There is something I want to ask you about clause 8.
我想问你有关第八条款的事。
It's been a bad day.
今天糟透了。
Some cakes, please.
吃几块蛋糕吧。