But engineers are hoping that their pretesting—using compressed air to fire a ping-pong ball down the pipe, Gillies says—will prevent such a mishap.
但工程师们希望他们的预测试——使用压缩空气将乒乓球注入管道——也许可以避免此类事故， Giilies 认为。
When marketers are creating fewer new ads and introducing fewer new products, it is doubly important to use rigorous pretesting to select the strongest alternatives.
随着新广告和新产品数量的减少，公司选出核心的主打产品无疑是必要的。
Those who had to recall both their mediator and the translation got scores averaging 51 percent if theyd been in the pretesting group and just 34 percent if theyd only studied.
需要回忆“介质”以及释义的小组成员中，先前在测试较多小组中学习的成员平均分为51分，而那些曾在不测试小组中学习过的成员平均仅为34分。
Those who had to recall both their mediator and the translation got scores averaging 51 percent if they'd been in the pretesting group and just 34 percent if they'd only studied.
需要回忆“介质”以及释义的小组成员中，先前在测试较多小组中学习的成员平均分为51分，而那些曾在不测试小组中学习过的成员平均仅为34分。
Those who had to recall both their mediator and the translation got scores averaging 51 percent if they'd been in the pretesting group and just 34 percent if they'd only studied.
需要回忆“介质”以及释义的小组成员中，先前在测试较多小组中学习的成员平均分为51分，而那些曾在不测试小组中学习过的成员平均仅为34分。
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