noun [具体名词]日历(solar calendar and lunar calendar)；日程表；记事录，大事记；历法A calendar is a particular system for dividing time into periods such as years, months, and weeks, often starting from a particular point in history.历法 Chinese calendar
verb [vt. 及物动词]把…排进日程表（或时间表），把…记入记事录A good study plan includes a study calendar and a to-do list.一个完善的学习计划包括学习日程和待办事项清单。