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
I'm sorry. Really, I'm sorry.
我为你难过 真的为你难过。
He said he would rather not tell his age.
他说他不愿告诉年龄。
Hello!
您好！