| 释义 |
overburden
I. \| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷\ transitive verb
Etymology: over (I) + burden, v.
: to place an excessive burden on : load to excess : weigh down
< the pauper class which overburdens the city asylums — Nels Anderson >
< overburdened … by a profusion of ornament — Anny Varron >
< tree branches overburdened with ice >
II. \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ ̷ ̷\ noun
Etymology: in sense 1, from overburden (I); in other senses, from over (III) + burden, n.
1. : excess of burden
2.
a. : consolidated or unconsolidated material overlying a deposit of useful geological materials (as a coal seam or an ore body) especially where mined by open cuts; also : sedimentary rock overlying older crystalline rocks
b. : loose soil, sand, gravel, or similar material above a bedrock
3. : the sterile stratum lying above a cultural level at an archaeological site |