optional tasks中文什么意思
任选事项
例句与用法
- Although you can use any criteria for grouping tasks ( such as shortest tasks and longest tasks , required tasks and optional tasks , and fun tasks and grunt work ) , the following two grouping criteria are the most common
尽管可使用任何准则（譬如最长任务和最短任务，必选任务和可选任务，有趣的任务和乏味的任务等）来组合任务，但以下两个分组准则是最常见的：
