a list of planned activities or things to be done showing the times or dates when they are intended to happen or be done

a production schedule 生产进度表

a hectic/tight (= very busy) schedule 忙乱的／紧张忙碌的日程安排

Everything went according to schedule (= as had been planned). 一切按照日程安排进行。

a list of the times when events are planned to happen, for example the times when classes happen or when buses, etc. leave and arrive

The class schedule is available on the website. 课程表可在网站上查到。

a bus schedule 公共汽车时刻表

a schedule of talks at the convention 大会演讲日程表

an official list of things

a schedule of business expenses 业务开支清单

early

We expect the building work to be completed ahead of schedule. 我们希望建筑工程能提前竣工。

The project came in several months ahead of schedule.

We're actually on course and possibly even slightly ahead of schedule.

The freelancers are working ahead of schedule, so we will need to find more work for the duration of their contract.

I'm delighted to report that we're ahead of schedule.

not early or late

Managers need to know whether work is proceeding on schedule.

Is everything on schedule? We need to make sure we deliver in May as planned.

It's critical to the success of this project that we stay on schedule.

All three projects were completed on schedule and within budget.

Fears were raised when her yacht failed to arrive on schedule.

to do less work than you planned to do by a particular point in time

I'm afraid we've fallen behind schedule in recent weeks.

The project fell behind schedule after a major investor withdrew.

We only started work two months ago and we've already fallen behind schedule.

The contract was terminated when work fell behind schedule.

to arrange that an event or activity will happen at a particular time

The meeting has been scheduled for tomorrow afternoon. 会议安排在明天下午。

[ + to infinitive ] The flight is scheduled to arrive at 8.45, but it's running 20 minutes late. 航班预定于8：45到达，但要晚点20分钟。