1、To tourists' disappointment that the lake is no longer like what it was . 2、I just have a rough idea how a number of high-quality paper is manufactured out of bamboo.
So that tourists disappointed that the lake is no longer what it used be. I just have a rough idea roughly how to use a number of high-quality paper is manufactured out of bamboo.
Those who cause the tourists to be disappointed was Tai Lake no longer is past appearance. (what) I only am knew sketchily how some high quality papers are do use the bamboo to make (a rough idea)