mulch土壤: soil; ground; pedogenesis; p ...覆盖: cover; overlap物: thing; matter; object覆盖层: overburden; superstratum; ba ...护: protect; guard; shield下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:土壤覆盖物；覆盖层；护根物，即可在微信中查询翻译
