This is troubling as climbing arctic temperatures combined with rapid sea ice loss are creating a new type of climate feedback loop which could accelerate Arctic warming.

这是令人担忧的，因为北极气温上升和海冰迅速消失正在形成一种新型的气候反馈回路，可能会加速北极变暖。

youdao

Metal loop (usually aluminum) with a spring-loaded gate on one side used for connecting various parts of a climbing system.

一侧有弹簧门的金属环状物(通常为铝)，用于连接攀登系统的各部分。

youdao

Metal loop with a spring-loaded gate on one side used for connecting various parts of a climbing system.

一侧有弹簧门的金属环状物，用于连接攀登系统的各部分。

youdao

This speed-climbing technique is known as running a PDL (or Pakistani Death Loop, purportedly named after an unfortunate South Asian climber who took a huge fall off the Nose attempting to break the record).

WSJ: El Capitan's Nose in a Day | By Michael J. Ybarra