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
Is anybody hungry?
有人饿了吗？
I'm going to show him how to speak English.
我正要指点他如何讲英语。
In what way?
在哪方面呢？