Obc
abbr. outer back cover 封底; on board checkout 在板校验; oscillating Baffle column 振动挡板柱（塔）; old brutal convict 时间长而令人痛苦的肺病
🗣️ 情景例句
Have a nice flight.
祝您一路顺风。
It's worth seeing.
它绝对值得一看。
We are very proud of him.
我们真为他感到自豪，