If you have any difficulty, you can turn to my friends in pot-holing club.假如你遇到困难, 可以去找我那些洞穴探险俱乐部的朋友帮忙.Cave exploration, or pot-holing as it has come to be known, is a relatively new sport.洞穴勘察或洞穴勘探是一项比较新的体育运动.Malcolm sa...