alternate between

英 美
  • 时而...时而...
  • alternate v.交替;轮流adj.间隔的;轮流的;交替的n.代替者;供替代的选择
  • between prep.在...之间adv.在中间
    1. Many of the common materials of the earth's crust may alternate between the living and the nonliving states.
      地球表面上有许多普通的状之都可能在有生命和无生命中交替。