Free climbing means climbing with little special equipment and ropes.

自由攀登意味着用很少的特殊设备和绳索攀爬。

The documentary offers a fascinating look into the world of free solo climbing, a sport that requires a rare combination of strength, skill, and mental fortitude.

这部纪录片以迷人的视角展现了单人自由攀登的世界，这项运动需要力量、技巧和毅力的罕见结合。

" The Impossible Climb" by Mark Synnott is a book that delves into the history and culture of free solo climbing, as well as Honnold's upbringing and early climbing career.

Mark Synnott 的“The Impossible Climb”一书深入探讨了自由攀岩的历史和文化，以及 Honnold 的成长和早期攀岩生涯。