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
Don't be such a grouch.
不要总是牢骚满腹。
What are you looking for?
你正在找什么？
Those flowers are lovely, too.
这些花也很漂亮啊。