| 单词 | aggrade |
| 释义 | aggrade —aggradation /ag'reuh day"sheuhn/, n. —aggradational, adj. /euh grayd"/, v.t., aggraded, aggrading. Phys. Geog. to raise the grade or level of (a river valley, a stream bed, etc.) by depositing detritus, sediment, or the like. Cf. degrade. [1895-1900; AG- + GRADE] |
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