| 1. | It is free from air, moisture or impurities . 它不含空气,水份和杂物。 |
| 2. | The sunburnt sands drank water like a sponge . 被太阳晒烫的沙子像海绵一样吸收水份。 |
| 3. | The crust seals the soil and prevents the evaporation of water . 这层表皮把土壤封闭,防止水份蒸发。 |
| 4. | Probably most of the uptake and loss water is through the body wall . 水份的吸取及损失的大部分可能是通过体壁进行的。 |
| 5. | This crust dramatically changes the rate at which water filters into the soil . 这层表皮显著地改变了水份渗入土壤的速度。 |
| 6. | Gas bubbles in the ash left holes that store large amounts of water for plant use . 火山灰内的气泡会留下空洞,它可以贮藏大量水份供植物利用。 |
| 7. | In a surface burst, large quantities of earth or water enter the fireball at an early stage and are fused or vaporized . 表面爆炸时,一开始便有大量的泥土或水份被卷入火球中,并熔化或汽化。 |
| 8. | 5 the nourishment water supplies to absorb to have another 5营养水份供给吸收多 |
| 9. | Clay often exists in fields covered with some water 黏土通常产于水份充足的土地。 |
| 10. | 6 . drink plenty of fluid to prevent dehydration 6 .应补充足够水份,以防脱水现象。 |