Ecos
abbr. 嵌入式可配置操作系统（Embedded Configurable Operating System）；扩展式通信操作系统（Extended Communication Operating System）
🗣️ 情景例句
Harry, if Michelle doesn't want to go,
Harry如果Michelle不想去，
I invited him ti come down, but he wouldn't.
我请他下来，但是他不肯。
That's the doorbell, said Ann's mother. They're here!
“门铃响了，”安的母亲说。“他们来啦！”