vt. 装载过多，使负担过度，使过劳；压垂。 trees overburdened with fruit 果子结得过多的树。 n. 1.过重的货物，重担，过度的负担。 2. 【地质学；地理学】浮盖层；覆盖层；表土。
an excessive burden 同义词：overload,
the surface soil that must be moved away to get at coal seams and mineral deposits
burden with too much work or responsibility
load with excessive weight
In mining and in archaeology, overburden (also called waste or spoil) is the material that lies above an area of economic or scientific interest. In mining, it is most commonly the rock, soil, and ecosystem that lies above a coal seam or ore body.
例句与用法
1.
Overburden had concealed the radioactivity . 覆盖层屏蔽掉了放射性。
2.
The overburdened heart may be carrying an extra pressure or volume load . 负荷过重的心脏，可能承担额外的压力负荷或容量负荷。
3.
Just as you may despise charles for his overburden of apparatus, you perhaps despise him for his lack of specialization . 正如你可能嘲笑查尔斯笨重的装备一样，你也可能嘲笑他研究面太宽，不够专业化。
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