动词 keep out:

1. prevent from entering; shut out

2. remain outside

keep mum参照 mumkeepv.保持；保留；继续；贮藏；经营；遵守；供给；照管；饲养；耽搁；保持食物不变质；健康状况如何；保守（秘密@）；记录；遵守；保护n.生计；保存；城堡主楼；监狱；围墙keeping abreast of time与时俱进keep one's mouth closed悲剧痛感keep ... on board使 ... 有(工作上的)联系keep under surveillance[法] 看管Keep it for yourself.你自己留起来吧。keep one's pride intact喜欢侦探小说keep seedlings survival保苗keep one's eyes skinned喜爱音乐keep a good lookout for小心提防, 注意, 戒备keep company with sb.与某人来往