up arrow

基本解釋

Use the yellow up arrow to return to the top-level transformation.
請使用黃色向上箭頭返回頂級轉換。
Many shells also allow you to browse the list of previous commands using the up arrow key, or by pressing Control+P.
許多 Shell 還允許您使用向上箭頭鍵或按 Control+P 來瀏覽以前的命令列表。
Note: In most shells, when you press the up arrow key, the entire multi-line entry is redrawn on a single, long input line.
注意：在大多數 Shell 中，當您按向上箭頭鍵時，整個多行輸入將重繪到單個長輸入行上。

He is reaching his bow and arrow up to the sky.
So I'm hitting the up arrow right now.
所以現在我在敲右箭頭鍵。
哈佛公開課 - 計算機科學課程節(jié)選
So in a moment you're going to go ahead and hit the spacebar and then as things fall from the screen when they line up with the left arrow, hit the left arrow with a different arrow, hit that arrow and see how good a score you can get.
一會兒你走到前面，敲一下空格鍵,當屏幕上面的東西從左邊往下掉的時候,你就敲一下鍵盤上的左鍵,是哪個方向，敲對應的方向鍵就可以了,我們來看看你能得多少分。
哈佛公開課 - 計算機科學課程節(jié)選

Then while watching live TV, you hit the up arrow and can quickly tune to one of those channels by selecting the corresponding logo.
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