keep off phr v [T] 1 [ keep sth ↔ off] to prevent something from affecting or damaging something else 防止; 挡住: A hat will keep the sun off your head. 帽子能防止头上晒到太阳。 2 [ keep off sth] to not go onto an area of land 不进入，离开: Keep off the grass! 勿践踏草地！ 3 [ keep off sth] to not talk about something 不谈论〔某事〕: Maud tried to keep off politics. 莫德尽量避免谈论政治。