⭐1⭐
fever/ˈfiːvər/ n.发烧
have/run a fever 发烧
【解释】
If you have a fever when you are ill, your body temperature is higher than usual.
【例句】
You're running a fever. I'm going to take you to the hospital.
你发烧了，我要带你去医院。
Uncle Sam had a high fever at that time, so he didn't do as well as he had expected.
山姆叔叔当时发烧了，所以表现没有他之前预想的好。
This kind of medicine can work wonders for fever. It can reduce fever quickly.
这种药对发烧有奇效，它能快速退烧。
⭐2⭐
have/run a high fever 发高烧
have/run a low-grade fever 发低烧
have/run a slight fever 发低烧
have/run a mid-grade fever 发中烧
【说明】
1. 低热（低烧），指腋温为37.5℃~38℃、中度热（中烧）38.1～39℃、高热（高烧）39.1℃以上。
2.“高烧”可以说high fever，但“低烧”一般不直接说low fever(虽然很好理解)，一般都说low-grade fever。
你去必应搜索low fever，出来的也都是low-grade fever，如下图：
【例句】
She's complaining of chest pains, shortness of breath, and she has a high fever.
她说胸痛，呼吸急促，还有高烧。
You're still running a low-grade fever, and your white cell count is a little higher.
你还在发低烧，而且你的白细胞数有点高。
⭐3⭐
have/run a temperature /ˈtemprətʃər/
发烧
【解释】
1. If you are running a temperature or if you have a temperature, your temperature is higher than it should be. 发烧
2. 可以用a (high) temperature表示发(高)烧，但不用a low temperature表示“发低烧”，因为a low body temperature指的是体温低于正常值，英语叫：
Hypothermia/ˌhaɪpəˈθɜːrmiə/（低温症）
If someone has hypothermia, their body temperature has become dangerously low as a result of being in severe cold for a long time.
【例句】
I think I've started running a temperature. Maybe I should go lie down.
我感觉我已经开始发烧了。也许我该去躺下。
He began to run an extremely high temperature.
他开始发严重高烧。
猫筱哚
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