We started creating our function test suites as early as possible, since these tests were an invaluable tool for the engineering team.

我们尽可能早的开始创建我们的功能测试集合，因为这些测试对工程团队来说是非常有价值的工具。

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To avoid these, we decided to provide team members with a computer-based tool that would help them better carry out requirement engineering activities.

为了避免这些问题，我们决定要为组员提供一个基于计算机的工具，以帮助他们更好的进行需求工程活动。

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They discuss how they developed a personal software process (PSP) data collection tool, based on the software Engineering Institute discipline created by Watts Humphrey.

他们讨论如何基于由软件工程研究所(Soft ware Engineering Institute) Watts Humphrey创建的原则，来开发个人软件过程(PSP)数据收集工具。

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Its invention reduced the amount of time necessary to perform complex mathematical operations, making it an invaluable tool for commerce, science and engineering.

FORBES

Three researchers won the Nobel Prize in Chemistry today for their work turning a protein found in jellyfish into a ubiquitous biotech tool that is used in drug discovery, genetic engineering and most types of research.

FORBES: Magazine Article

Given all of that we could indeed say, as Felix does, that the current low Apple stock price is a useful tool for them in the battle to hire that scarce Silicon Valley engineering talent.

FORBES: Why A Low Share Price Can Be Better Than A High Share Price: Good News For Apple?