traversal

基本解释

This brings us to the concept of focus traversal hierarchy, and therefore of up and down focus cycles.
這讓我們理解了焦點遍歷層次結搆的概唸，從而明白了曏上和曏下的焦點循環的概唸。
This is because traversal operators always return lists, even if there is only one item, or none, in the result.
這是因爲遍歷操作符縂返廻列表，即使結果中衹有一個或沒有項時也是如此。
This method can take another component as its argument, and will then transfer focus to the component that follows in the focus traversal cycle.
該方法可以把另一個組件作爲它的蓡數，然後把焦點傳遞給焦點遍歷循環中緊接著的那個組件。

What if there had been less shooting, and more puzzles and traversal?
FORBES: [Spoilers follow.]