locking range

例句：

1. 1. The security system has a locking range of 50 meters.
   这个安全系统有一个锁定范围为50米。
2. 2. The police managed to narrow down the locking range to within a few kilometers.
   警方设法将锁定范围缩小到几公里内。
3. 3. The engineers designed a device that could lock any object within a certain range.
   工程师们设计了一种装置，可以锁定任何物体在一定范围内。