因为微信开启了回车按键发送消息，关闭回车按键发送消息的具体操作步骤如下：
1、首先打开微信，点击右下角“我”选项。
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2、然后在该页面中点击“设置”选项。
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3、之后在该页面中点击“聊天”选项。
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4、然后在该页面中点击“回车键发送消息”右侧开关选项向左滑动关闭即可显示发送键了。
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