Note: The only place you need to do a double knot is at the start and finish of the paper block.
备注：在开头和结尾的地方，必须打两个结。
Most shoelaces on running shoes are extra long, so be safe and double-knot them.
多数跑鞋的鞋带很长，所以要系好，要系双扣。
Most shoelaces on running shoes are extra long, so be safe and double-knot them.
多数跑鞋的鞋带很长，所以要系好，要系双扣。
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