An exception, though, is damage to the anterior cruciate ligament (acl) of the knee.

不过，膝关节前交叉韧带(ACL)受损是一个例外。

When you quickly change direction while running, the anterior cruciate ligament is basically the only thing holding the two halves of your leg together.

当你在跑步时快速改变方向时，前交叉韧带基本上是唯一将你的两半腿固定在一起的东西。

And they took him to the vet and found out that he had a torn cruciate ligament, which is basically a dog's ACL. - Can you see the rainbow, Bakk?

他们带他去看兽医，发现他的十字韧带撕裂，基本上是狗的前交叉韧带。 - 你能看到彩虹吗，Bakk？