1·At an agreed signal they left the room.
收到约定的信号后,他们离开了房间。
—— 《牛津词典》
2·A radio signal was sent to the spacecraft.
向宇宙飞船发出了无线电信号。
—— 《牛津词典》
3·A thin cable carries the signal to a computer.
一条细电缆把信号传给一台计算机。
—— 《柯林斯英汉双解大词典》
4·The signal will be converted into digital code.
信号将被转变成数字编码。
—— 《柯林斯英汉双解大词典》
5·The coded signal is received by satellite dishes.
电码信号通过卫星天线接收。
—— 《柯林斯英汉双解大词典》