Cov
abbr. 恶棍城市（游戏名, City of Villains）；反障碍车辆（Counter-Obstacle Vehicle）；变异系数（Coefficient of Variation）
🗣️ 情景例句
My wife Marilyn, my father and mother,
我太太Marilyn， 我父亲和母亲，
A person must strain one's ears to hear a wild animal in the forest.
在森林里，人类必须对野兽竖起耳朵才行。
There are some newspapers on the table.
桌上放着几份报纸。