• 保持清洁

keep in抑制； 闭门不出； 让火不熄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 up the morale保持旺盛的士气keep sb. in line使某人规规矩矩, 使协调起来keep one's balance保持(身心)平衡,保持镇静keep someone going使某人能维持下去keep-alive anode保弧阳极keep on one's toes保持警觉keep aspect ration保持宽高比keep oneself clean保持自身清洁keep in with sb.v.与某人友好相处Keeping the Spirit本神

1. The sidewalk was hosed every day to keep it clean.
   人行道每天都用水管冲刷以保持清洁。
2. Iron corrodes unless it is greased or kept clean.
   如果不涂油或保持清洁铁便会腐蚀。