ripcord

n.开伞索

What would you use a ripcord to pull open? 你用拉伞索时需打开什么？

Its ripcord can be attached to heavy furniture or a special hook so that the parachute opens automatically after its wearer jumps out a window. 降落伞的开伞索可以绑在重家具或是特制的钩子上，带上这种降落伞的人一旦跳出窗外，降落伞便会自动打开。