Chinese phrase
多久一次？ duō jiǔ yí cì
Meaning
How often?
When to use it
Asks how often something happens or should be done. It is a short, neutral question about frequency, often used for schedules, routines, or medicine.
Example dialogue
这个药多久一次？ zhè ge yào duō jiǔ yí cì
How often should I take this medicine?
说明书上写着每天一次，饭后服用。 shuō míng shū shàng xiě zhe měi tiān yí cì fàn hòu fú yòng
The instructions say to take it once a day after meals.