traversal

基本解釋

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(diǎn)遍歷層次結(jié)構(gòu)的概念，從而明白了向上和向下的焦點(diǎn)循環(huán)的概念。
This is because traversal operators always return lists, even if there is only one item, or none, in the result.
這是因?yàn)楸闅v操作符總返回列表，即使結(jié)果中只有一個(gè)或沒(méi)有項(xiàng)時(shí)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(gè)組件作為它的參數(shù)，然后把焦點(diǎn)傳遞給焦點(diǎn)遍歷循環(huán)中緊接著的那個(gè)組件。

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