Use the link or type the URL into a web browser and press ⏎ Return. If you're not automatically logged in, sign in.   To do so:  Click on the search bar at the top of the screen. Type the name of the person to whom you sent the request. Click on their profile. Click on Friend Request Sent to the right of the person's name at the top of their profile. Click on Cancel Request, then click on Cancel Request again to confirm.

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Write a summary of the previous text in Chinese:
进入http://www.facebook.com。 点击窗口右上角两个人影的图标。 点击删除请求。 按下面的步骤取消你发出的好友请求：