illuvium

常見(jiàn)例句

• The paddy soil probably had a long history of tillage, and furthermore it had formed gley horizon and illuvium, but its fertility was not high either.
  水稻土有較長(zhǎng)耕作歷史，并已形成了潛育層和潴育層，但土壤肥力并不高。
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