reciprocate
英 [r?'s?pr?ke?t]
美[r?'s?pr?ket]
- vt. 报答；互换；互给
- vi. 往复运动；互换；酬答；互给
英英释意
- 1. act, feel, or give mutually or in return;
- "We always invite the neighbors and they never reciprocate!"
- 2. alternate the direction of motion of;
- "the engine reciprocates the propeller"