For dynamically typed languages, the tests must cover possible type errors, too.
对于动态语言来说，测试也必须覆盖可能的类型错误。
Dynamically typed languages enforce typing at run time, usually based on an object's characteristics.
而动态类型语言通常基于一个对象的特征在运行时实施类型。
With testing, you can have the benefits of dynamically typed languages with much less of the downside.
有了测试，您就能享有动态类型语言的诸多益处，而不利之处则更少。
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