I'm most grateful to you for taking so much trouble to explain the best way of getting there.
你不厌其烦地给我解释去那里的最佳途径,我对些深表感激。
It is possible that there is a definite relation between these paintings and the markings that sometimes accompany them.
有时,这种图画与墙壁上的刻痕共存,它们之间可能有一定的联系。