1. I need to master a second language, like English, Japanese, or French for example. as I need to show my tourists something one or two on the journey.

2. I wouldn't feel nervous if I could recite all of these knowledge. Above all, this job will necessarily help me widen my horizons.

3. The general knowledge of this world wouldn't be limited any more.

I need to show my tourists something one or two on the journey 我需要教游客们一些知识

This job will necessarily help me widen my horizons 这份工作让我眼界大开

The general knowledge of this world 世界观