垃圾分类 meaning in English

refuse classification
refuse sorting

After they sort the garbage , they are surprised
垃圾分类之后，他们感到很惊讶。
Do you classify rubbish before sending it to a dustbin
倒垃圾时，你会给垃圾分类吗？
The classification signs of municipal domestic waste
城市生活垃圾分类标志
On the management of separate urban life waste collection
浅谈城市生活垃圾分类收集管理
Classification and evaluation standard of municipal solid waste
城市生活垃圾分类及其评价标准

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