The first record contains the number, n, of distinct type of assignments that contribute to the final grade; for example, quizzes, tests, exams, and so on.

第一个记录包含形成期末成绩的不同类型的任务的数量，n，举例来说，小测验、测试、考试，等等。

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As your project matures, you can lean on the compiler and test framework as you refactor into an n-tier, enterprise-grade application. Or not.

随着项目的成熟，在把应用系统重构为n -层企业级别的应用系统时，你可以依赖或者不依赖编译器和测试框架。

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Nano-hydroxyapatite slurry (n-HA) was used to make composite with medical grade polyamide 66 (PA66) and high-density polyethylene (HDPE).

应用纳米羟基磷灰石（n HA）、聚酰胺66（PA66）和高密度聚乙烯（HDPE）制备了生物医用复合材料。

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Stephen O'Connor, a fifth-grade teacher in Wells, N.

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