However , an in-depth study from the environment agency ( pdf ) found that the total impact on global warming could be slightly higher for washables than for disposables .
不过，一份环保机构的深入研究发现（pdf），可洗尿布对于全球暖化的影响甚至还略高于一次性尿布。
Washables can have a lower carbon footprint , but only if you have an energy-efficient washing machine , use a 60-degree wash cycle , limit yourself to 24 nappies , and don 't tumble dry or iron them .
