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
Hi, Mr. Stewart.
嗨， Stewart 先生。
Whatever you say.
随便你。
There should always be exceptions to the rule.
凡事总有例外。