water saving lock

例句：

1. 1.This new water-saving lock is more efficient than the old one.
   这个新型的节水锁比旧的更高效。
2. 2.The government has introduced a series of measures to encourage people to use water-saving devices.
   政府已经推出了一系列措施，鼓励人们使用节水设备。
3. 3. The factory uses a water-saving mechanism in its production process.
   这家工厂在其生产过程中使用了节水机制。