零下5度英语怎么说

In English, "零下5度" is typically translated as "minus five degrees." The use of the word "minus" to indicate a temperature below zero degrees is a common convention in English-speaking countries. Here are a few example sentences with their translations:
It's minus five degrees outside. (外面是零下五度。)
The thermometer reads minus five degrees. (温度计显示零下五度。)
The forecast calls for minus five degrees tonight. (天气预报预计今晚会是零下五度。)
I hope this helps! Let me know if you have any other questions.