形 state-owned，collective，common，general；动 （使公开） make public，publicize；名 public affairs，official business，authority，collective ；

[例句] 他的目的地是乔伯姆公地，那里和他在科茨沃尔德的家离得很远。 His destination was Chobham Common, a long way from his Cotswold home.

[例句] 在布里斯托尔附近的5号高速公路上，南行的车辆排成了绵延20英里的长龙。 Southbound traffic tailed back for twenty miles on the M5 near Bristol.