(对某事)变成十分协调、合适

I was uncomfortable at first, but now I'm beginning to get in the groove.

最初，我感到很别扭，可是现在我开始觉得顺畅了。

Fred began to get in the groove, and things went more smoothly.

弗雷德开始适应于是事情就进行得顺当多了。