Whereas the " backspace" button, you'll... it'll generally have the arrow on it.

而“退格”按钮，你会......它通常会有箭头。

So, " backspace" is when you make a mistake and you want to just go back and clear it up and then continue.

所以，“退格键”是指当你犯了一个错误，你只想返回并清除它然后继续。