例句與造句

1. 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
   盡管可使用任何準(zhǔn)則（譬如最長(zhǎng)任務(wù)和最短任務(wù)，必選任務(wù)和可選任務(wù)，有趣的任務(wù)和乏味的任務(wù)等）來組合任務(wù)，但以下兩個(gè)分組準(zhǔn)則是最常見的：
2. It's difficult to find optional tasks in a sentence. 用optional tasks造句挺難的