例句與造句

1. Parent groups are used for recursive hierarchies
   父組用于遞歸的層次結構。
2. Optional if this group is a recursive hierarchy , for parent group , type or select an expression to use as the recursive group parent
   （可選）如果此組是遞歸層次結構，則對于“父組” ，請鍵入或選擇要用作遞歸組的父組的表達式。
3. It's difficult to find recursive hierarchy in a sentence. 用recursive hierarchy造句挺難的