| 词汇 | rappel |
| 词根词缀 | 词源： 1931, "mountaineering technique for descending steep faces," from Fr. rappel, lit. "recall," from O.Fr. rapel, from rapeler "to recall, summon" (see repeal). The verb is first recorded 1957. The same word had been borrowed earlier (1848) to mean "a drum roll to summon soldiers." |
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