《徐霞客游记·粤西游日记二十一》
所以我在都娇山才知道外表的迹象容易混淆，在水月洞才知道近似的东西容易遗漏。
故余于都峤而知迹之易混，于水月而知近之易遗也。
Thus, I realized the superficial signs are easily mistaken on Dujiao Mountain, and the similarities are easily missed in Shuiyue Cave.