They further point out that weight loss on fad diets, which typically restrict or prohibit certain foods, is often because the dieter has fewer food choices available.
他们进一步指出，能减肥的流行饮食法一般都要限制或禁食某些食物，这往往因为减肥者可选择的食物较少。
Avoid fad diets. It's never a good idea to trade meals for shakes or to give up a food group in the hope that you'll lose weight — we all need a variety of foods to stay healthy.
避免时尚减肥药品：用药品代替食品或者节食的减肥方法是错误的，饮食均衡才能保持健康。
It's too early to tell whether Facebook-like features in the workplace will be a passing fad or a lasting trend, but IBM says it's eating its own dog food.
类似Facebook的社交网络功能在职场中究竟会成为一种经久不衰的潮流，抑或只是昙花一现？ 现在下定论还为时过早。
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