1. I need a jammer for my phone to block unwanted calls and texts.
我需要一个信号屏蔽器来阻止不必要的电话和短信。

2. The concert venue had a strict policy against jammers to prevent illegal recording of the performance.
演唱会场地严禁使用信号屏蔽器以防止对表演的非法录音。

3. The teacher confiscated the students' jammers after they were caught using them during class.
老师在发现学生们在课堂上使用信号屏蔽器后没收了它们。

4. The military uses jammers to disrupt enemy communication signals during warfare.
军方在战争中使用信号屏蔽器来干扰敌方的通讯信号。

5. The jammer was found hidden in the suspect's car, leading to his arrest.
在嫌疑人的车辆中发现了信号屏蔽器，导致他被逮捕。

6. I bought a portable jammer to use in public places where there is too much noise.
我买了一个便携式信号屏蔽器，在噪音太大的公共场所使用。