mutual

• 互相尊重

  mutual respect

• 互相关心

  care for one another

• 互相爱护

  love one another

• 互相帮助

  help each other

• 互相握手

  reciprocal handshake

• 互相挑战

  challenge each other

• 互相支援

  mutual support

• 互相学习

  learn from one another

• 互相依赖

  interdependence

• 互相合作

  mutual cooperation

• 互相排斥

  mutually exclusive

• 互相吹捧

  mutual flattery