Translation of retrovisor

It is very important that you know the exact needs of your students. There are a lot of details involved in this learning process. One should always check all options and decide what is best.
The climb was much exhausting than I had presumed. I had forgotten that we were at high altitude where there is less oxygen and that every step required double effort. It was a great exercise.
The pass was on the way to Lai Chau, and on the day we were there it was foggy on both sides. There were some other travelers at the top and to be honest, the view was even beautiful when it was foggy.