Definition
At the expected or planned time; neither early nor late.
按时間行事
The project is progressing on schedule, with all milestones being met on time.
該項目正在按計劃進行，所有里程碑都按時完成。
We must ensure all departments are working as planned to ensure the product is released on schedule.
我們必須確保所有部門按計劃工作，以確保產品按時發布。
Despite some minor setbacks, they still managed to get the event started on schedule.
儘管有一些小挫折，他們仍然設法按計劃開始了活動。