求翻译：掌握语言的最佳途径是让学生完成各种任务，所以本课堂设置了一系列任务，通过完成任务来习得知识，来提升语言表达和运用能力。是什么意思？

The best way to master the language is to allow students to complete various tasks, so the classroom setting a series of tasks, acquisition of knowledge by completing tasks, and to improve language proficiency.

Command of the language is the best way to allow students to complete various tasks, so the classroom settings, through a series of tasks to fulfill its mandate to enhance learning, knowledge and ability to apply linguistic expression.

The grasping language best way is lets the student complete each kind of task, therefore this classroom has established a series of duties, through completes the task to practice results in the knowledge, promotes the language expression and utilization ability.

The best way is to enable students to master the language for various tasks, so this class to set a series of tasks by completing tasks to the acquisition of knowledge, to improve language and ability to apply it.

Mastering language best through students for various tasks, classroom setting series of tasks, by completing tasks to knowledge acquisition to boost language and ability.