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。This enzyme would make the filtration of beer easier.这种酶会使啤酒更容易过滤。The technology exists to remove all of these contaminants through filtration.这一技术就是利用过滤的方法除去这些污染物的。You can purify the air with a filtration system.你可以用过滤系统来净化空气。