1. Nature's holding area fills slowly with that clean, filtered water.
    大自然的蓄水区就会慢慢蓄满干净的过滤水。

2. Neighborhood groups have coordinated their efforts to clean up the trash or garbage.
    居民组织已经在协助清除垃圾或废物。

3. He keeps his room clean and neat.
    他使房间保持清洁和整齐。

4. He scrubbed the floor clean.
    他把地板擦干净了.

5. He is forever talking about the friendly people, the clean atmosphere, the closeness to nature and the gentle pace of living.
    他滔滔不绝地大谈友好的农民，洁净的空气，贴近大自然的环境和悠闲的生活节奏。

6. He transferred the mould to a clean plate and let it grow for two weeks.
    于是他很快把霉菌移到了一只洁净的盘子里，让它生长了两个星期。

7. However, the natural processes for filtering water can clean only a certain amount of water by removing the pollution.
    但这些过滤水的自然作用通过去污仅能净化一定量的水。

8. And Polly (波莉), my grandmother, who perfected a brush to clean the inside of a water tap.
    还有波莉，就是我的外祖母，她改进了一把刷子用来清洁水龙头的内部。

9. "I want to tell them, 'Look, I am as clean as you are,' but it wouldn't help. I don't tell anyone I'm a garbageman. I say I'm a truck driver.
    “我真想对他们说，‘你瞧瞧，我跟你一样干净。’可这没用。我对别人不说我是垃圾工。我说我是个卡车司机。

10. You must keep your clothes clean.
    你必须保持衣服清洁。