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单词	reciprocation
释义	re·cip·ro·ca·tion (rĭ-sĭp′rə-kāshən) n. 1. An alternating back-and-forth movement. 2. The act or fact of reciprocating; interchange.
随便看	Indo-European root: rē- Indo-European root: rēd- Indo-European root: r̥tko- Indo-European root: sak- Indo-European root: sal- Indo-European root: sed- Indo-European root: segh- Indo-European root: sek- Indo-European root: sekw- Indo-European root: sekw- Indo-European root: sekw- Indo-European root: sel- Indo-European root: sem- Indo-European root: sem- Indo-European root: sen- Indo-European root: sengwh- Indo-European root: sent- Indo-European root: sep- Indo-European root: septm̥ Indo-European root: ser- Indo-European root: ser- Indo-European root: seuə- Indo-European root: seuə- Indo-European root: skand- Indo-European root: skei-

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