| 词汇 | retrograde |
| 词根词缀 | 词源： 1392, originally of the apparent motions of planets, from L. retrogradus "going backward," from retrogradi "move backward," from retro- "backward" + gradi "to go, step." General sense of "tending to revert" is recorded from c.1530. 词根记忆： 后退,倒退(retro+grade走→向后走)[retro-表示"向后,倒退"] v. 退步;堕落(retro向后+grade→向后退步)[grad=step,grade,表示"步,级"] 词根词缀： retrograde retrograde v 退步,堕落(retro向后+grade=向后退步) grad=step,grade,表示”步,级” grade n 等级,阶级gradient a 步行的n. 坡度(grad+ient) gradation n 等级,层次(grad+ation) gradual a 逐步的(grad+ual) graduate v/n 毕业,分级(grade 步+uate=完成所有步骤=毕业) graduation n 毕业(graduate+ion) degrade v 降级,退化(de向下+grade=向下降级) degrading a 不名誉的,可耻的(de+grad+ing=向下降了=不名誉的) retrograde v 退步,堕落(retro向后+grade=向后退步) upgrade v 上升,升级(up向上+grade=向上升级) downgrade v 贬低,降低(down向下= grade=向下贬低) centigrade a 百分度的( centi百+grade级,度) |
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