The sizing of clothing has changed drastically over the last 50 years.

在过去的50年一副的尺寸变化很大。

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Over the years, many brands have changed measurements so that a woman who previously wore a 12 can now wear a 10 or an 8, a practice known as "vanity sizing."

近些年来，许多品牌改变了测量单位，这样先前穿着12码地女性现在可以穿10码或8码。这一实践被称为“虚荣尺码”。

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This alleviates the need to run additional chillers or over-sizing equipment when not necessary.

这减少了需要执行额外的冷水或以上规模的设备时没有必要。

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According to the first ever nationwide sizing survey using 3D body scanners, both typical waist-lines and height have increased over the last 30 years.

BBC: Children 'have wider waists now than in 1978'