In times of stock strength, people learn to buy stocks after a decline, when they are cheaper, because the stocks have a tendency to recover.

在股市强劲的时候，人们明白要等到股票下跌之后、当股价更低的时候再买入，因为股市总有回升的趋势。

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Customers can buy pre-determined prescription strength lenses, or simply buy lenses with no prescription, without the need for an eye exam, which adds to the potential danger.

顾客不需要做任何眼部检查就可以买有视力矫正的美瞳，也可以买没有度数的美瞳，这也增加了潜在的风险。

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I don't ask for much-just enough to buy some bread and a bottle of wine and get my strength back.

我要的不多——够买点面包和一瓶葡萄酒，让我恢复气力就行。

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Joshua Hayes : Yes, absolutely, Kate, but sadly I have long scans that look for stocks that are making moves on heavy volume near 52-week highs above the 50-and 200-day moving average, and I always buy strength.

FORBES: 5 Leading Stocks in Possible Short Set-Ups

The campaign was launched in September by the police, who wanted to limit the ability of street drinkers to buy cheaper, high-strength alcoholic drinks at Ipswich's 122 off-licensed outlets.

BBC: Street drinker PHOTO: Thinkstock

Or buy one of the relative-strength ETFs that are popping up, such as the PowerShares DWA Technical Leaders Portfolio, which buys the top 100 U.S. stocks ranked by relative strength.

FORBES: Surfin' ETFs