第三人称单数：backspaces 现在分词：backspacing 过去式：backspaced
1.(按打字机退格键)使倒退一格,倒格
1.to move back one or more spaces along a line of writing on a computer screen or on a typewriter
1.the key that you press on a keyboard to move one space backward in a document
backspacesbackspacesbackspaces