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have been composting

  • present perfect progressive
    of compost.
    compost
    noun
    a mixture of various decaying organic substances, as dead leaves or manure, used for fertilizing soil.

Example Sentences

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While farmers have been composting livestock for years, human composting has no legal precedent.

From The Verge ● Jun. 15, 2015

Other cities, like Seattle and San Francisco, have been composting school food for years.

From New York Times ● Jun. 22, 2014