to overburden
01
burden with too much work or responsibility
文法情報
規則的
現在時制
overburdening
単純過去
overburdened
過去分詞
overburdened
02
load with excessive weight
Overburden
01
an excessive burden
文法情報
02
the surface soil and rock that must be removed to access underlying coal seams or mineral deposits
例
They removed over 50 million tons of overburden before reaching the coal seam.
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overburden
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