Op-ed
a. （报纸）专栏（版）的, 署名评论（版面）的
🧩 词语组成解析
观测所\\n[计] 操作, 运算, 算符
Ed
[ed]
Estimate Departure time 预计起飞时间;Engineering Development 工程研制;Effective Dose 有效剂量;
🗣️ 情景例句
But don't give up.
但是千万不要放弃。
A man who has friend must show himself friendly.
与朋友交，必须友好相处。
Three days ago.
3天前。