请帮我看一下这英文句子写得对吗?谢谢.Ifyouchangebackgroundcolorfromredtogreen,thenyoucouldnotbechangedbacktored.中文背景：哪果你将背京色从红色变成绿色,那你就不能再变回红色了.
<p>问题：请帮我看一下这英文句子写得对吗?谢谢.Ifyouchangebackgroundcolorfromredtogreen,thenyoucouldnotbechangedbacktored.中文背景：哪果你将背京色从红色变成绿色,那你就不能再变回红色了.<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">李明杰的回答：<div class="content-b">网友采纳 Ifyouchangethebackgroundcolorfromredtogreen,thenyoucouldnotchangitback.Ifyouchangethebackgroundcolorfromredtogreen,thenitcouldnotbechangedback.
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