abseil

verb

1. 绕绳下降（用绳缠绕着身体，双脚蹬陡坡或峭壁自己放绳下滑）
   to go down a steep cliff or rock while attached to a rope, pushing against the slope or rock with your feet

1. VERB 缘绳索滑下（峭壁、崖面等）；绕绳下降
   To abseil down a cliff or rock face means to slide down it in a controlled way using a rope, with your feet against the cliff or rock.
   1. The man and his son Mark had abseiled down the sheer cliffs.
      这个男人和他的儿子马克曾沿绳索爬下过这些陡峭的悬崖。

in AM, use 美国英语用 rappel

1. The man and his son Mark had abseiled down the sheer cliffs.
   这个男人和他的儿子马克曾沿绳索爬下过这些陡峭的悬崖。
2. You have to learn how to abseil when you want to do technical climbing.
   如果你想学技术攀爬，你首先必须学会如何顺着绳索下滑。
3. Belarus soldiers of special troops abseil from a helicopter during exercises in Minsk, 21 June 2007.
   2007年6月21日，明斯克军事演习中，白俄罗斯特种部队从直升飞机上滑降突袭。
4. Rappel/ abseil stations should be installed where descending by foot is likely to cause erosion problems.
   3下降点的设置处，应选在以步行方式下降会产生侵蚀问题的地点。
5. Semi-static ropes have moderate extension under load to facilitate interventions and abseil decents at moderate speeds.
   近似静力绳承载负荷时会有适度的延展，以适应特种训练及速降行动的要求。

noun

1. (mountaineering) a descent of a vertical cliff or wall made by using a doubled rope that is fixed to a higher point and wrapped around the body

   Synonym:    rappel

verb

1. lower oneself with a rope coiled around the body from a mountainside
   1. The ascent was easy--roping down the mountain would be much more difficult and dangerous
   2. You have to learn how to abseil when you want to do technical climbing

   Synonym:    rappelrope down