I will respond to your message when I return.

我会回复您的信息，当我返回。

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This stress sends a message to warn your brain of danger, allowing your body to respond quickly.

这种压力会向你的大脑发出危险警告的信号，让你的身体迅速做出反应。

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This feature is already embedded in tools like Happy Factor, a Facebook app that randomly pings you with a text message, to which you respond with a number indicating your happiness level.

比如“快乐因子”测试，在正文消息里用随机的乒乓声音影响你，然后用脸谱计算机应用程序指示你的快乐等级数。

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