I wish my mouth had a backspace key.
我多希望嘴上有个退格键。
Hit the backspace key on a computer or typewriter keyboard.
敲计算机或打字机上的退格键。
The Backspace key is really an Undo function, albeit a special one.
退格键实际上是一个撤销功能，虽然它非常特殊。
Backspace, and your RE won't match as you expect it to. The following.
转换成一个回退符，你的RE将无法象你希望的那样匹配它了。
Backspace, and your RE won't match as you expect it to. The following.
转换成一个回退符，你的RE将无法象你希望的那样匹配它了。
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