water-tight switch

例句：

1. 1. The new water-tight switch is more reliable than the old one.
   这款新的防水开关比旧的更可靠。
2. 2.The technician replaced the water-tight switch in the circuit.
   技术人员更换了电路中的防水开关。
3. 3. The water-tight switch prevents water from entering the room during rainstorms.
   防水开关在雨天防止水进入房间。