语言起源理论总不会超过其学术性推测的框框。
The origin of language theories can never amount to much more than educated conjecture.
另一方面，语言拥有许多学术性的词汇。
On the other hand, language includes a large number of "learned" words.
语言以达到一般外国人的水平，不仅日常用语表达自如，且能够进行复杂的学术性探讨。 。
To be able to talk about all daily activities as well as academic subjects. To achieve almost native speaker-like fluency.
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