The bear and the wolf grew uneasy, and turned back and went into their holes.
熊和狼变得不安起来，转身钻进各自的洞里。
2
I advised to fill those holesback and dig new ones.
我建议把那些洞填回去，再挖新的。
3
Instead of letting it pass, the holes would reflect the light back toward the tip of the fibre optic cable, effectively turning the diaphragm into a mirror even as it still allowed water to pass.