一些例子包括懂得怎样使用电脑，成为一个好的作家和讲一门外国语言也说明了这一点。
A few examples include knowing how to use a computer, being a good writer and speaking a foreign language.
一门外国语最难掌握的一项技巧就是听懂母语讲话人用正常速度所说的自然语言的能力。
One of the most difficult skills to acquire in a foreign language is the ability to understand the natural language spoken by native speakers at a normal speed.
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