On average, early gainers increased their body weight an average of 19 pounds more than the regular gainers, who saw an average increase of five and a half pounds over three years.

平均说来，早期体重增加者比在三年多时间内平均增长5.5磅的常规体重增加者平均多增长19磅。

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The report did not tell why the average weight of Americans increased.

该报告并未告知美国人的平均体重为什么会增加。

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The result showed that: (1) Adding APS increased the average body weight of group of piglets.

结果表明：（1）黄芪多糖可以提高断奶仔猪的平均日增重。

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As both jet fuel prices and average weight have increased over the last few decades, airlines are largely stuck paying the price.

BBC: Should heavy travellers pay more?

The scientist calculated his findings based on data revealing the average weight of an American had increased by 10 pounds in the 1990s.

CNN: Airline policies juggle larger passengers