For another, most of the classes on Coursera are in English, and though there are plans to add translations, language barriers can be a big obstacle.

另一方面，Coursera 上的大多数课程都是英语授课，尽管有增加翻译的计划，但语言障碍会是一个很大的阻碍。

Not Limited to Language Education: While research in language education is a core component of applied linguistics, its scope extends beyond this. It covers areas such as language policy, translation, language pathology, machine translation, language planning, and more.

虽然语言教育研究是应用语言学的核心组成部分，但其范围超出了这一范围。它涵盖语言政策、翻译、语言病理学、机器翻译、语言规划等领域。