Then you rinse your mouth.
이제 입안을 헹궈.

:40번~56번

rinse : (물건을) 헹구다, 가시다<out>
          (비누·때 등을) ~에서 씻어내다<out, away, off / out of, from ‥>
ex) Rinse all the soap out of your hair after you wash it.
      머리를 감으면 잘 헹구어라.