名詞
一啲唔係講出嚟,而又傳遞到指示、訊息嘅行動;可以係手勢、動作、燈光,甚至電流,唔一定係人睇得明嘅,有時係畀特定嘅設備或者儀器用(量詞:個) signal; something that conveys a message without speech including gestures, movements, lights, or even electric current and can extend beyond a specific device or instrument
Fractured Her Bone, and Nearly Could Not Send Out a Distress Signal […] The two managed to set up a tent to stay for the night before it became dark, but their mobile phones and satellite phones were without reception and they were not even able to make emergency calls. Wang Lin was only able to contact her friend (Ms./Mr. Jiang) when there was some reception close to 9 pm.