比方说，我们在网页上再放上一个按钮。

Let's say, then, you also put a button on the page.

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屏幕左侧边缘成了后退按钮，一般用于返回上一个应用程序。

The left edge of the screen is used as a back button, it is usually used to return to the previous application.

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于是，我要做的就是，当注册页面出现时，在邮件地址“@yourdomain.com” 前面加上一个数字以及输入验证码，然后点击“现在注册”按钮。

So all I had to do when the signup screen loaded was enter a number before the @ sign in email, enter the captcha, and click signup.

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用户希望可以单击后退按钮返回上一页或上一个视图。

Users expect they can click the Back button to return to the previous page or view.

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在此，Back按钮应该删除输入到清单8中定义的文本字段中的上一个字符。

In this case, the Back button should remove the last character entered into the text field defined in Listing 8.

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Add按钮将新的输入字段附加到表单，Remove 按钮删除上一个字段，Send向服务器提交表单数据。

The Add button appends a new input field to the form, the Remove button deletes the last field, and Send submits the form data to the server.

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因为按钮都是输入类型的，所以需要一个表单，但不需要有动作因为我们只是简单的后退到浏览器历史中的上一个页面。

Because buttons are input types, we need a form, but no action is needed because we are simply just going back one page in the browsing history.

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主，上一个和下一个按钮，下面3个项目。

For Main, Prev and Next buttons for following 3 items.

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先放上一个硬币，然后按按钮。

First put a coin and then press the button.

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加上一个退出按钮，使得可以退出程序。

Add a Quit button to end the program.

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加上一个退出按钮，使得可以退出程序。

Add a Quit button to end the program.

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