overburden
[,əuvə'bə:dən, 'əuvə,bə:dən]
vt. 使负担过重；使过劳
n. 表土（等于burden，capping）；过重的负担
同义词
参考例子
1.The ship overburdened with cargoes should not be allowed to set sail.
过载的船只不允许启航。
2.The formation and expansion of a soil cavity is among the basic conditions of the overburden karst collapse.
土洞的形成与扩展是产生覆盖型岩溶地面塌陷的前提条件之一。
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。
英文解释
n.
1.the surface soil that must be moved away to get at coal seams and mineral deposits
2.an excessive burden
v.
1.burden with too much work or responsibility
2.load with excessive weight
网络释义
overburden
覆盖层; 超负荷; 表土; 盖岩层;
overburden mining
剥离工作;
overburden rock
复盖岩层;
overburden stress
上覆岩层应力;
overburden density
上覆岩层密度;