ascentionistBNC²³⁶²¹³⁺¹ 例句 It is important that the first ascentionist carefully considers where each point of fixed protection is placed, taking into account all safety, environmental and ethical considerations. 首攀者须慎重考虑每一个固定支点的位置，并将安全、环境和攀登伦理纳入全盘考量，这是十分重要的。 climbing.org