更新14：来自读者Adam的视频显示他的手机完全不受影响。这个现象很有趣。 （译注：翻译时译者发现YOUTUBE上显示上传者删除了视频，貌似这个该读者后来也遇到了这个问题。）
Update 14: Look! Reader Adam posts this video of his phone not having this problem. Very interesting.
或者如果一个家庭少报了开支，他假设同一家庭同时也相应少报食物开支，这样恩格尔系数才不受影响。
Or if a household does underreport its spending, he assumes that it also downplays its food expenses proportionately, so that their Engel’s coefficient is unaffected.
更新14：来自读者Adam的视频显示他的手机完全不受影响。
Update 14: Look! Reader Adam posts this video of his phone not having this problem.
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