noun🔗Share表土，覆盖层。 The rock and subsoil that lies above a mineral deposit such as a coal seam."Heavy machinery was used to remove the overburden before miners could access the valuable coal seam. "在矿工能够开采到珍贵的煤层之前，必须使用重型机械移除覆盖在煤层之上的表土和岩石。geologymaterialmineralChat with AIVocabulary GamePractice Reading
noun🔗Share覆盖层，表土 A sterile stratum that lies above the stratum being investigated"The archaeologists carefully removed the overburden of soil and rocks to reach the ancient Roman floor below. "考古学家们小心地移走了覆盖在上面的表土和岩石，以便能够触及到下面的古罗马地面。geologyChat with AIVocabulary GamePractice Reading
verb🔗Share负担过重，使劳累过度 To overload or overtax"The large project will overburden the team if we don't hire more staff. "如果我们不雇佣更多人手，这个大型项目会使团队负担过重，劳累过度。workactionbusinessChat with AIVocabulary GamePractice Reading
