设计意味着按某个计划画出某个新东西的设计图。
To design means to make the drawing of something new according to a plan.
每当按某个新的信息改写记录，就叫作更新这一记录。
Whenever a record is rewritten with some new information, this is called updating the record.
事件可由用户操作(如单击鼠标或按某个键)、程序代码或系统生成。
Events can be generated by a user action, such as clicking the mouse or pressing a key; by program code; or by the system.
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