"I don't know whether the fever is because of heatstroke or infection."
- "I don't know whether the fever is because of heatstroke or infection."
"I don't whether ~" 「〜か〜かわからない」
"the fever is because of heatstroke or infection" 「熱中症によるか、感染によるか」
"because of heatstroke" 「熱中症による」
"because of infection" 「感染による」
「どうすればいいんだろう」
"I don't know what to do"
"what should I do?"