non-locking key

例句：

1. 1.This non-locking key is more convenient than the traditional one.
   这个非锁定钥匙比传统的钥匙更方便。
2. 2. The locksmith used a non-locking key to open the door.
   锁匠用一个非锁定钥匙打开了门。
3. 3. The new security system requires a non-locking key to operate.
   新的安全系统需要使用非锁定钥匙来操作。