1. 紅燈常常是危險的信號。
   A red lamp is often a danger signal.
2. 紅燈通常是危險的信號。
   A red light is usually a signal of danger.
3. 只要紅燈一亮，就表示有危及職工的險情。
   Only if the red light comes on is there any danger to employee.
4. 他開車闖紅燈讓警察看見了。
   He drove through a red light (ie passed it without stopping) and a policeman saw him.
5. 他是這樣沒有耐心的司機，所以他闖紅燈了。
   He was such an impatient driver (=He was so impatient a driver) that he went through the red light.

紅的英語翻譯：

燈的英語翻譯：