緩降器

cable reel and harness used to lower oneself to safety (e.g. from a building on fire)

device / tool / utensil / CL:臺|台[tai2]

to drop / to fall / to come down / to descend

to surrender / to capitulate / to subdue / to tame

slow / unhurried / sluggish / gradual / not tense / relaxed / to postpone / to defer / to stall / to stave off / to revive / to recuperate

to decrease gradually / to descend gradually