(安排进行某活动的)时间框架,时间范围a period of days, weeks, months, etc. within which an activity is intended to happen
Have you set a time frame for completing the job? 你给这项工作定完成时限了吗?
The new law introduces these changes in/within a fairly long/short time frame. 新颁布的法律计划在相当长/短的时间内进行这些改革。