Sedar
abbr. submerged electrode detection and ranging 在水中的电极测试和距离修正
🗣️ 情景例句
We are from Shanghai.
上海。
I'm sorry. I was just playing football with my friends.
对不起，我只是和朋友去踢了足球。
Are you sure you can come by at nine?
你肯定你九点能来吗？