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
I'd like to give thanks for Grandpa coming to live with us.
我感谢爷爷到这儿和我们一起生活。
Thank you for your letter.
谢谢你的来信。
CUSTOMS OFFICER: Are your friends Danish, too?
你们的朋友也是丹麦人吗？