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
She has the ability to speak English fluently.
她能够流利地说英语。
When the fruit is scarcest, its taste is sweetest.
物以稀为贵。
Between twelve and eighty years we gradually lose this power;
除在12岁至80岁之间，我们逐渐丧失这种能力。