"Normal temperature" 英文可以说成 "normal body temperature"。

"Normal" 这个词来源于拉丁语 "norma"，意思是"标准"或"规范"，在医学上，"normal temperature" 指的是人体正常的体温范围。

例句：

The normal body temperature for an adult is around 98.6 degrees Fahrenheit.
His temperature was normal, so the doctor knew he didn't have a fever.
She checked her temperature and it was within the normal range.

翻译:

成年人的正常体温大约是98.6华氏度。
他的体温正常，所以医生知道他没有发烧。
她检查了体温，发现在正常范围内。