| 1. | Is the water polluted at source or further downstream ?
河水是在源头还是在流出之后受到污染的？ |
| 2. | The public insist that pollution control measures be installed .
公众坚决主张采取控制污染的措施。 |
| 3. | They always enter fresh, uncontaminated solutions and wash tanks .
它们都能使用新鲜的未经污染的溶液和水洗盆。 |
| 4. | The explosion at the chemical factory caused a major pollution scare .
化工厂发生爆炸引起了害怕污染的巨大恐慌。 |
| 5. | The external surface of culture vessel is, of course, subject to contamination .
培养器皿的外面当然是被污染的。 |
| 6. | Contaminated instruments and floor surfaces should be chemically disinfected .
污染的器材和地面要用化学药物消毒。 |
| 7. | Vegetables are subject to contamination by food handlers after harvesting .
蔬菜通常是收获后被食品加工人员污染的。 |
| 8. | Industry, it turned out, accounted for only ten percent of the smog in the city .
后来发现，工业污染仅占该市空气污染的10。 |
| 9. | With contaminated hand, turn the child's head to right side to suction left bronchus .
用已污染的手将小儿的头部转向右侧以吸引左侧支气管。 |
| 10. | The generation of aerosols in polluted atmospheres has been investigated in several experiments .
在几个实验中已经研究了污染的大气中气溶胶的产生。 |
