coiled key

例句：

1. 1.The old man kept his keys in a coiled keychain.
   老人把钥匙放在一个卷轴钥匙链里。
2. 2. She used the coiled key to open the door.
   她用卷轴钥匙打开了门。
3. 3. He found the coiled key under the bed and unlocked it.
   他在床下找到了卷轴钥匙并打开了它。