这本书几乎涉及了关于语言教学的所有重要论题。的翻译：This book has involved almost all important topics in language teaching. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

This book covers almost all the important topics on language teaching.

This book has involved almost all important topics in language teaching.

This book has involved nearly about language teaching all important theses.

This book covers nearly on the language of instruction of all important topics.

This book has involved almost all important topics in language teaching.