a.[Z]

1. 相互的，交互的
   They have a reciprocal loathing for each other.

   他们互相憎恨。

2. 互惠的，对等的；相互补偿的
   take reciprocal action

   采取相应行动

3. 回报的，报答的
   reciprocal gifts

   回赠礼品

4. 【数】倒数的；互反的，互逆的
5. 【语】相互的

n.[C]

1. 互相作用的事物；对应（或对等）的事物
2. 【数】倒数

adj.

1. given, felt, or done in return.
2. (of an agreement or arrangement) bearing on or binding two parties equally.
3. Grammar  (of a pronoun or verb) expressing mutual action or relationship.
4. (of a course or bearing) opposite in direction.

n.

1. Mathematics  the quantity obtained by dividing the number one by a given quantity.
2. Grammar  a reciprocal pronoun or verb.