They did well on a test, but none of their black colleagues did, so the city that employed them threw out the test and promoted no one.

他们在能力测验中表现很好，但是他们的黑人同事们没有，所以雇用他们的市政厅方面用测试结果作为依据没有提拔黑人。

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However, they can provide significant value when the unit tester executes the test using a stubbed-out, black box approach.

然而，它们可以在单元测试人员利用局部的黑盒方法执行测试时提供有意义的价值。

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Taking chrome black t (t) as main material, a new prescription of trace hardness indicating agent has been screened out through orthogonal test.

以铬黑t (T)为主要原料，通过正交试验，筛选出微量硬度指示剂的新配方。

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