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overburden

英 [əʊvə'bɜːd(ə)n]

英英释义考试真题实用场景例句

vt. 使负担过重；使过劳
n. 表土（等于burden，capping）；过重的负担

英英释意

1. the surface soil that must be moved away to get at coal seams and mineral deposits

2. an excessive burden