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- Rsesarch on Tea Garden Pollution by Lead from Car Tail Gas 汽车尾气中的铅对茶园污染的研究
- Survey on Health Effects of Air Pollution by Lead on Children 大气铅污染对幼儿健康影响的调查
- Are our children being poisoned by lead in the atmosphere? 我们的儿童是否受著空气中铅的毒害?
- Preventing pollution by automobile emission ? 防治机动车排气污染物污染。
- Preventing pollution by automobile emission? 防治机动车排气污染物污染。
- The river has been polluted by waste products from the factory. 这条河已经受到工厂排放的废料的污染。
- Are our children being poisoned by lead inthe atmosphere? 我们的儿童是否受著空气中铅的毒害?
- Objective To investigate the hepatotoxic effect induced by lead. 目的探讨铅致兔的肝毒性作用。
- Less pollution by decease of film and water waste. 5. 4.;降低废片及废水造成的环境污染。
- The area will be free of pollution by the year 2006. 到2006年,这个地区将没有污染。
- Immediate steps should be taken to prevent pollution by excreta. 要立即采取措施防止排泄物污染。
- My partner surprised me by leading with a spade. 我的搭档先出黑桃,使我感到吃惊。
- My partner surprised me by leading with a spade . 我的搭档先出黑桃,使我感到吃惊。
- pollution by lead 铅污染
- Reduces air pollution by minimizing the discharge of unburned hydrocarbon . 将未燃烧的碳氢化合物含量降至最低,减少了空气污染。
- The fiver has been polluted by factory waste. 这条河流被工厂废物所污染。
- Rice straw is recycled for reuse to avoid creating pollution by burning it. 避免燃烧稻草造成污染,稻草也要回收再利用。
- One who shows the way by leading, directing, or advising. 领路人在方法或道路上引导或指导另一人的人
- The water was polluted by refuse from the factory. 工厂所排放的废物弄脏了水。
- The air was polluted by factory smoke. 空气被工厂冒的烟污染了。