"It's a 'buy one, get one free' deal," said Douglas Kenney, a professor at the University of Colorado Law School and the editor of an upcoming book that explores the nexus of water and energy.

“这就像是‘买一送一’的交易”，道格拉斯·肯尼说，他是科罗拉多州大学法学院的教授，同时也是一本探讨水资源与能源之间关系的书的编辑。

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In the land of plenty, we are constantly tempted with more ways to spend: bigger servings, buy one get one free offers, and endless opportunities to get rich quick.

在富饶之地，有太多种不断引诱我们花销的方式：丰盛的餐饮、买一送一、无数的快速致富机会。

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Buy-one-get-one-free deals are said to encourage shoppers to buy food in bulk that goes off before it can be eaten.

买一赠一的促销是为了引诱购买者大量地采购食品，而这往往使得食物在被食用之前就变质了。

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Nutritionist Nigel Denby said discount offers, such as buy-one-get-one-free were adding to the opportunity to buy bigger amounts of healthy food.

BBC: Planning 'key to avoiding waste'

The Blue Jackets offered a buy-one-get-one-free deal for their opener Monday against Detroit, a popular draw, and a sellout is expected.

NPR: NHL Has Work To Do To Win Back Fans After Lockout

The launch's demand appears to have been built on Motorola's original Droid, which itself was a blockbuster thanks in part to a buy-one-get-one-free promotion at Verizon.

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