Conjunctivitis is an illness of the eye. The white of the eye goes red, and the eye often feels sore, itchy, or sticky with a yellow or white film.

Conjunctivitis結膜炎 is an illness of the eye是一種眼睛的疾病，The white of the eye眼白的部分 goes red會變紅，and the eye眼睛 often feels常常覺得 sore, itchy, or sticky痠痛、發癢，或黏黏的 with a yellow or white film還帶著黃色或白色的分泌物。

It can pass from person to person, which is why schools send children home with it. In American English people also call it pink eye — that name just describes the look.

It它 can pass from person to person可以人傳人，which is why所以 schools學校 send children home with it才會讓得病的小孩回家。In American English在美式英語裡 people人們 also call it也叫它 pink eye紅眼症 — that name這個名字 just describes the look只是在形容看起來的樣子。

Though actually, not every red eye is this illness: smoke, chlorine, tiredness, or an allergy can redden the eye without it being infectious.

Though actually不過其實，not every red eye不是每個紅眼睛 is this illness都是這個病：smoke, chlorine, tiredness, or an allergy菸、氯、疲勞，或過敏 can redden the eye都可能讓眼睛變紅 without it being infectious卻不會傳染。

The ending -itis is a doctor’s way of saying a part of the body is swollen and angry. It is a medical word, but parents and teachers use it freely because the illness is so common in children.

The ending -itis字尾-itis is a doctor's way of saying是醫生用來表示 a part of the body身體某個部位 is swollen and angry又腫又發炎的說法。It這個字 is a medical word是醫學用詞，but但 parents and teachers家長和老師 use it freely卻很常直接用 because the illness is so common in children因為這個病在小孩子身上太常見了。