1. By itself, nature can keep the balance and provide plenty of clean water for us. Nature recycles water. 大自然本身能够保持水的平衡并给我们提供充足的净水。大自然能够使水得到反复循环利用。
2. We looked at old Maggie and saw that her poor face was as white as a sheet. 我们看着老马吉，她那张脸看上去像纸一样白。
3. We wore clothing slightly inappropriate for the weather, clean but not ironed, 我们穿上了与天气稍稍不配的衣服，很干净但没有熨过。
4. The cup is clean. 杯子是干净的.
5. The curtains were enveloped in a sheet of flame. 窗帘被火焰吞没.
6. Though the costume consisted only of a sheet, it was very effective. 虽然那件化装服仅仅是一条被单,但效果很好.
7. Though the costume consisted only of a sheet, it was very effective. 尽管化装服仅由一个被单制成，却十分逼真。
8. The noble stared at the blank sheet of paper for a few seconds. 贵族盯着纸看了几秒钟，
9. The cup is clean. 杯子很干净。
10. The moon was above, cold and beautiful, and the music reminded Soapy of those days when his life contained such things as mothers and roses and clean thoughts and collars. 皓月当空，月光清冷而美丽。音乐使苏比想起了昔日的时光；那时他拥有母爱，享受着幸福，怀着纯洁的思想，还穿着衣领干净的衬衫。