| 词汇 | investigation |
| 词根词缀 | 词源： 1436, from L. investigationem (nom. investigatio) "a searching into," from investigatus, pp. of investigare, from in- "in" + vestigare "to track, trace," from vestigium "footprint, track" (see vestige). Investigate is c.1510 back-formation. |
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