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浩繁

Source : CEDICT

vast/voluminous/many and varied/numerous/extensive amount of/exhaustive/heavy (expenditure)/arduous/strenuous/exhausting/draining/burdensome

Source : CEDICT

vast/voluminous/many and varied/numerous/extensive amount of/exhaustive/heavy (expenditure)/arduous/strenuous/exhausting/draining/burdensome