an area with a poor [an excellent] TV signal
影象不清[極佳]的地區
A red light is usually a signal of danger.
紅燈通常是危險的信號。
They went into action at a given signal.
在約定的信號發出時, 他們投入了戰鬥。
What he said was the signal for the argument.
他的那番話引起了這場爭論。
an area with a poor [an excellent] TV signal
影象不清[極佳]的地區
A red light is usually a signal of danger.
紅燈通常是危險的信號。
They went into action at a given signal.
在約定的信號發出時, 他們投入了戰鬥。
What he said was the signal for the argument.
他的那番話引起了這場爭論。