| 1. | For many years the attention of environmental engineering was devoted largely to the development of safe water supplies .
在环境工程方面，人们多年来把注意力集中在水源的开发上。 |
| 2. | He made for the moment no further reference to their great question, but dipped again into shallower and safer waters .
他暂时没有再提到他们那个伟大的问题，只是谈些无关紧要的，不涉及感情的话。 |
| 3. | A stable and safe water supply is essential to mankind
稳定及安全的水源对人类至为重要。 |
| 4. | Sustainable and safe water supplies international symposium at hku
可持续及安全的食水供应国际研讨会在港大举行 |
| 5. | Evaluation of mining under safe water pressure of aquifer in deep zhaogezhuang coal mine
赵各庄矿深部带压开采评价 |
| 6. | Mining under safe water pressure of aquifer in 750 level dip of dongshan coal mine
太原东山煤矿750下山带压开采研究 |
| 7. | Safe water mark
安全水域标志 |
| 8. | Safe water marks
安全水域标 |
| 9. | The project ' s goal is to make sure local people have safe water , safe food and clean air
治理工程的目标是确保当地人的饮用水、食品安全以及空气清洁。 |
