In practice, testing occurred only every couple of days - not frequently enough for timely problem detection.

在实践中，测试要隔好几天才进行一次—间隔时间太长，无法及时检测问题。

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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