退格键 meaning in English

back space key
backspace character
backspace key

Press the backspace button to delete your mistakes when typing
按退格键删除键入时发生的错误。
Use the mouse pointer ( or press the backspace key on your keyboard ) to fire up the engine
用鼠标指针（或按下退格键，你的键盘），以火了发动机。
By default you can use the cursor keys , and backspace , to move around and edit the input line , just like with the bash shell
可以缺省地使用光标和退格键来移动和编辑输入行，就象在bash shell中一样。