Sedar
abbr. submerged electrode detection and ranging 在水中的电极测试和距离修正
🗣️ 情景例句
That's very nice of you, but I really can't.
你太客气了，可我真的非走不可。
Open your eyes!
眼睛睁大点！
Dear Abby,
亲爱的Abby，