【Ted-ED】越獄謎題：如何用打火機和保險絲準確計算時間？The Jail Break Riddle

A bank robber must escape prison by timing a 45-second window when an electric fence is deactivated. With a broken watch and two fuses that each burn for 60 seconds (but unevenly), the prisoner must use logic to measure the exact time required to escape without being electrocuted.