reciprocate

reciprocate
[rɪˈsɪprəkeɪt]
verb

[with obj.]respond to (a gesture or action) by making a corresponding one
互给；互换，交换（手势，动作）
the favour was reciprocated.
互相帮忙。
[no obj.]perhaps I was expected to reciprocate with some remark of my own.
或许我也该说上几句。
■experience the same (love, liking, or affection) for someone that has such feelings for oneself
回报，报答；酬答（爱，喜爱，感情）
her passion for him was not reciprocated.
她对他的热情没有得到回报。
[no obj.][usu. as adj. reciprocating](of a part of a machine) move backwards and forwards in a straight line
（机件）往复运动
a reciprocating blade.
往复运动的刀刃。

派生
reciprocation
noun
reciprocator
noun
语源

late 16th cent.: from Latin reciprocat- 'moved backwards and forwards', from the verb reciprocare, from reciprocus (see reciprocal)

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