The advantage of biological control in contrast to other methods is that it provides a relatively low-cost, perpetual control system with a minimum of detrimental side-effects.

与其他方法相比，生物防治的优点是它提供了一种成本相对较低、有害副作用最小的永久性防治系统。

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If the method works, it could provide farmers in Botswana—and elsewhere—with a low-cost, sustainable tool to protect their livestock, and a way to keep lions safe from being killed.

如果这个方法奏效的话，它能给博茨瓦纳以及其他地区的农民提供一种低成本、可持续的手段去保护牲畜，同时也能避免狮子被杀死。

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Today those egos are badly bruised and, in line with trends elsewhere, it is low-cost airlines that are taking an increasing share of the market.

和其在别处的规律相一致，如今这些争强好胜之举受到重创。 市场份额在不断增长的恰恰是低成本的航空公司。

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To maintain its technological edge and high profit margins, however, it must balance low-cost manufacturing abroad with the high-tech precision it achieves in Japan.

ECONOMIST: Manufacturing in Japan

Today those egos are badly bruised and, in line with trends elsewhere, it is low-cost airlines that are taking an increasing share of the market.

ECONOMIST: India's struggling airlines

He told BBC Wales the airport's transformation in the decade from 1997 came because it found a niche in the market with low cost airlines and was able to offer passengers something different from its nearby competitor, the much bigger Manchester Airport.

BBC: Cardiff Airport's ?500,000 'welcoming' revamp