| 1. | Problems of soil conservation and shoreland development are not likely to quickly disappear . 土壤保持和滨海地开发问题也不可能很快消失。 |
| 2. | The rotation of crops keeps the soil healthy and fertile 谷物轮种使土壤保持了肥力和高质。 |
| 3. | Forest and soil conservation 论森林与土壤保持 |
| 4. | Standard specification for quicklime and hydrated lime for soil stabilization 土壤保持稳定用生石灰和熟石灰的标准规范 |
| 5. | When trees are cut down , there is nothing to hold the soil in place 树木被砍伐了,山坡上就没有什么东西能够把土壤保持住了。 |
| 6. | When trees are cut down , there is nothing to hold the soil in place on the hillside 树木被砍伐了,山坡上就没有什么东西能够把土壤保持住了。 |
| 7. | The relationship of plant species diversity to ecosystem function in relation to soil conservation in semi - humid evergreen forests , yunnan province , china 植物多样性与生态系统土壤保持功能关系及其生态学意义 |
| 8. | On average , when compared with no input , the amount of runoff was saved by 17 % under the low input and 26 % under the high input treatment 与不投入相比,低投入处理平均有17 %的径流被土壤保持下来,而高投入处理则平均有26 %的径流量被保持下来。 |
| 9. | Calculations are made as to the benefits that can be expected to accrue from an area of land once the conservation measures have been installed 然而,人们对土壤保持直接带来的产量增加以及其它农场经营的进步(例如使用改良品种和肥料)带来产量增加的程度的认识不足。 |
| 10. | Within the space of a mile from its outskirts every irregularity of the soil was prehistoric , every channel an undisturbed british trackway ; not a sod having been turned there since the days of the czars 在它的郊外一英里的范围内,起伏不平的土壤保持着洪荒以来的特点,每一条道路仍然是当年不列颠人踩出来的自从凯撒时代以来,那儿的土地一寸也没有翻动过。 |