In the construction phase of every modern software package, the practice of testing plays a central role.

在每个现代软件包的构造阶段，测试这一实践都扮演着中心角色。

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This extra testing may or may not be good in principle, but it is likely to lead to chaos in practice.

这种额外的检测在原则上可能好或者相反，但是在实际的实验中肯定会带来混乱。

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In practice, multiple copies of an application usually do not run at the same rate, and application testing and evaluation is required to establish the real rates.

而在实际中，应用程序的多个副本通常不会以相同的速率运行，为了确定实际的速率，需要进行应用程序测试和评估。

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But Williams took an opposing view and pointed out to the precedent of 19-year-old rookie Jaime Alguersuari who had to race for Toro Rosso in Hungary without any testing practice.

CNN: Motorsport: Williams block Schu testing bid

While U.S. administrations going back to the Eisenhower era have given lip service to the goal of a negotiated ban on all nuclear testing, in practice they proceeded cautiously in trying to achieve this goal.

CENTERFORSECURITYPOLICY: Center for Security Policy | Fumble on the Test Ban Treaty By Richard Burt The Washington Post, 18 October 1999