number of twists

例句：

1. 1.The rope had a number of twists that made it difficult to unwind.
   这根绳子有很多扭结，很难解开。
2. 2. She counted the number of twists in the rope before she began to unwind it.
   她在开始解开绳子之前数了数绳上的扭结数量。
3. 3. The engineer carefully counted the number of twists in the cable before installing it.
   工程师仔细地数了数电缆上的扭结数量，然后才安装它。