However, this specific need only represents one of many aspects of software testing, and it should not create the barrier and impediments to developing quality software that it usually winds up doing.

尽管如此，这种特定需要仅仅代表软件测试中的一个方面，不应该对最终要进行的软件质量开发制造障碍。

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Declining water quality is a major factor in the pollution of the Great Barrier Reef.

水质下降是在大堡礁污染的主要因素。

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But 69 per cent said the cost, availability and quality of housing in London was a barrier to staff recruitment and retention.

不过，69%的企业表示，伦敦住房的成本、可用性和质量是招募和留住员工方面的一个障碍。

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Rancher Carol Kimsey, who lives in a valley near the Pacific Ocean on the U.S.-side of the fence, says the border barrier has improved the quality of life in the area.

NPR: San Diego Fence Provides Lessons in Border Control

In a recent survey of 700 international business professionals by Interbrand, a consultancy, 80% of respondents cited low quality as an important barrier to the sale of Chinese products abroad.

ECONOMIST: Chinese business

Only 3% of corporations and 11% of law firms identify the quality of work as their main barrier to outsourcing legal services, an extraordinary decline from the past.

FORBES: Legal Services Outsourcing (LSO) -- Maximizing Comparative Advantage