系上鞋带，解开鞋带。
她解开了她一只运动鞋的鞋带。
他解开了自己的鞋带。
如果你在门口看到一排鞋子，就解开自己的鞋带。
If you see a row of shoes at the door, start undoing your LACES.
如果你在门口看到一排鞋子，就解开自己的鞋带。否则，就穿鞋进去吧！埙。
If you see a row of shoes at the door, start undoing your LACES. If not, keep the shoes on.
如果你在门口看到一排鞋子，就解开自己的鞋带。否则，就穿鞋进去吧！
If you see a row of shoes at the door, start undoing your LACES. If not, keep the shoes on.
她的鞋带被冻在一起，他帮她解开。
Her shoelaces were frozen together and he helped her to untie them.
德国弗莱堡大学（Universityof Freiburg）的一个科学团队正在研究一种可利用传感器自动系鞋带的鞋，当使用者碰撞鞋跟时，鞋带就能自动解开。
A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces that could be taken off when users click their heels together.
德国弗莱堡大学（Universityof Freiburg）的一个科学团队正在研究一种可利用传感器自动系鞋带的鞋，当使用者碰撞鞋跟时，鞋带就能自动解开。
A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces that could be taken off when users click their heels together.
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