开始时，每隔一天一次，然后渐渐的改为一周一到两次。

Start with every other day, then gradually back off to once to twice weekly.

youdao

治疗持续15次，开针的5次要每天都来，而后每隔一天一次。

The treatment lasts for 15 sessions, the first 5 all in a row and after that every second day.

youdao