如今，许多学生用像 Tom 这样的特殊应用程序来做作业。
Nowadays, many students do homework with the help of the special apps like Tom.
他们可能会在手腕上戴一块特殊的手表，脚上穿一双特殊的鞋，或者使用手机上不同的应用程序来测量自己的运动。
They might wear a special watch on their wrist, shoes on their feet or use different apps on their phone to measure their movements.
默认策略应该能为多数工作负载提供足够的性能，但它可能不是某个特殊应用程序的理想选择。
The default policy should provide adequate performance for most workloads, but it may not be the ideal choice for a particular application.
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