Ofdm
abbr. 正交频分多路复用技术（Orthogonal Frequency Division Multiplexing）
🗣️ 情景例句
She went to a school-board meeting.
她去参加联合校董会的会议。
Which foot hurts?Is it the left one?
哪个脚受伤?是左脚？
It's about a time when there were black slaves in North America. It's about their fight for freedom.
（它）讲的是有一段时期，北美洲存在黑奴。影片讲述他们为自由而斗争的情况。