要掌握类路径，首先应从其源代码入手。

Mastering the classpath begins with the source code.

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时序图更进一步地掌握了应用程序的行为，并且使你更加深入地看到各个类之间是如何交互的。

Sequence diagrams take the capturing of application behaviour one step further, and let you see a closer view of the interactions between the classes that they are creating.

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他们刚好掌握了足够的统一建模语言(uml)来合理的绘制类图或者顺序图从而传达他们的系统的结构。

They learn just enough Unified Modeling Language (UML) to make reasonable class or sequence diagrams that communicate their system's structure.

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This is the kind of thing you should be able to deduce.

你们必须掌握推导这类问题的方法

耶鲁公开课 - 基础物理课程节选

Physicians over the years of having this instrument have learned how to be very sophisticated about looking at these pictures and diagnosing when something is wrong inside the chest, for example.

这些年来,使用这类设备的医生,已经熟练地掌握了,通过看这些X光片,来诊断,胸部疾病的方法

耶鲁公开课 - 生物医学工程探索课程节选