knock against each other

• 互撞

knock against each other的用法和样例：

例句

1. Where there are two, it's the second that clangs against the first and makes noise.
   戴双镯的手臂，镯子互撞发出叮当响声。
2. But during the collision, one galaxy can rip the other apart gravitationally, and dust and gas common to both galaxies does collide.
   当星系互撞期间，星系可能因重力拉扯另外一个星系，尘埃与云气也会因此而合并。