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
Right.
是的。
It started out to be a beautiful day.
刚开始天气不错。
I am afraid that l have to go.
我要走了。