In the days when washing was done painstakingly by hand with a washboard, a white dress was almost impossible to clean thoroughly.
在那个年代，人们还需要费力地用搓衣板手洗衣服，而一件白色的婚纱几乎不可能彻底的清洗。
Its advantages include less chemicals needed, low energy consumed and clean thoroughly. So, this is a green remediation technology and attracts the attention of many environmental scientists...
该技术具有所用化学试剂少、能耗低、修复彻底等优点，是一门具有较好发展前途的绿色修复技术，目前已引起环境科学家们广泛的关注。
Its advantages include less chemicals needed, low energy consumed and clean thoroughly. So, this is a green remediation technology and attracts the attention of many environmental scientists...
该技术具有所用化学试剂少、能耗低、修复彻底等优点，是一门具有较好发展前途的绿色修复技术，目前已引起环境科学家们广泛的关注。
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