Ecs
abbr. 环境控制系统（Environmental Control System）；发动机控制系统（Engine Control System）；能源通信服务（Energy Communication Service）
🗣️ 情景例句
Hello, my name is ... May I speak to ...?
喂， 我叫……我可以和……讲话吗？
My brother wants to learn how to speak Chinese.
我的兄弟要去学中国话。
I've just arrived myself so forgive me if I don't seem to know what's going on.
我自己也刚到家。所以，如果我不了解情况的话，那么请你原谅。