Just as he gets into the swing of things, rain stops play.

当他终于进入状态时，一场大雨不期而至。

It might take you a few goes to just loosen up your mouth muscles and relax your tongue and get into the swing of things.

你可能需要花一些时间来放松你的嘴部肌肉，放松你的舌头，开始熟悉这个流程。