keep nit守望; 望风keepv.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Keep your clothes clean.衣服要保持干净。Keep the newest N messages保留最新的N条消息Keep Pinion and Wheel Same保持两齿轮齿顶高相同keep returning the shuttle连续反击keep someone on the string使某人悬虑；使某人焦急不安；使某人没有着落keep a large establishment家业巨大Keep sb. comfort company导乐陪伴KEEPING IN TOUCH WITH HOMEkeep watch against thieves谨防小偷keeping alivesurvival rate存活率

1. He pegged away at the work throughout the night.
   她孜孜不倦地做了一个通宵。
2. They were toiling at their experiment.
   他们正在辛苦地做试验。