When teaching children how to use a computer, instructors show them over and over again until they can perform tasks correctly.
当教导孩子如何使用计算机，教官告诉他们一遍又一遍，直到他们能正确地执行任务。
When teaching children how to use a computer, instructors show them over and over again until they can perform tasks correctly.
当教导孩子如何使用计算机，教官告诉他们一遍又一遍，直到他们能正确地执行任务。
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