| 例句 |
Now, more and more people are realizing the importance of clean air.现在越来越多的人意识到净化空气的重要性。There are regulatory requirements for clean air and water.对清洁的空气和水有监管要求。No American should have to drive out of town to breathe clean air.所有美国人都不必开车到城外去呼吸洁净的空气。Moms are joining together, to come out in strength for our kids’ right to clean air.为了孩子们享有洁净的空气，越来越多的母亲正联合起来。The filtration system provides the crew with clean air free from fumes.过滤系统使得全体人员能够呼吸到没有烟雾的清新空气。 |