1. The radio is giving out a signal.
   这收音机发出了一种信号。
2. The teacher signalled to the boy to begin.
   老师向那个男孩做手势，叫他开始。
3. We signalled the taxi driver to pull over.
   我们招呼出租车司机把车开过来。
4. What he said was the signal for the argument.
   他的那番话引起了这场争论。
5. I had to pass the signals to the skipper.
   我得把信号传送给船长。
6. The people on the island are sending up smoke signals.
   岛上的人们在燃放烟雾信号。
7. In a forest, wet wood and needles attenuate the signals.
   在森林中，潮湿的树木与针叶会使讯号变弱。
8. This metal tower is used to relay television signals to distant villages.
   这个金属塔是用于向遥远的村子转播电视讯号的。
9. Our fax machine differentiates between an incoming fax signal and a voice call.
   我们的传真机能区分接收传真信号和语音信号。
10. In our village, there is an antenna on every roof for receiving TV signals.
    在我们村里, 每家房顶上都有天线接收电视信号。
11. In this stage, the subtractor rejects the 5V common-mode signal from the voltage reference.
    这个阶段，减法器抵消了电压参考的5V共模信号。
12. Instead of a holoscan, the comlink generated an audio signal—an accelerating series of beeps.
    通讯器并没有生成任何全息图像，而是放出了一阵音频信号——一连串急促的“哔哔”声。
13. The driver misread an important signal.
    司机看错了一个重要的信号。
14. The conductor signaled the orchestra to rise.
    指挥打手势让乐队起立。
15. Signals are made with flags or lamps.
    用旗或灯传递信号。
16. Interviewers quickly learn to pick up non-verbal signals.
    采访者很快学会读懂非言语信号。
17. The signal pistol went off with a bang.
    信号枪砰的一声响了。
18. The emergency signal SOS has no literal meaning.
    呼救信号SOS在字面上没有任何意义。
19. A bell signals the end of a school period.
    铃声报知下课的时间。
20. Drivers must be on the alert for traffic signals.
    驾驶员必须密切注意交通信号。

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