keep off(短语动词):避免接触;不要踩/不要进入(常用于标志或告示);也可指“暂时不吃/不碰(某种食物或事物)”。常见用法如 Keep off the grass.
/ˌkiːp ˈɔːf/(英); /ˌkiːp ˈɔːf/(美)
Keep off the grass.
请勿践踏草坪。
Residents were warned to keep off the frozen lake because the ice might crack at any moment.
居民被警告不要进入结冰的湖面,因为冰层随时可能开裂。
keep 源自古英语 cēpan,有“保留、守住、看护”的意思;off 表示“离开、脱离”。合在一起,keep off 就引申为“保持离开(某物/某地)”,常见于公共提示语与安全警告中。