Gastritis is an illness of the stomach: the soft inside wall becomes swollen and sore, and you often feel a burning pain, especially when the stomach is empty or after certain foods. You may also feel sick, feel full too soon, or not want to eat.

Gastritis胃炎（gastritis） is an illness of the stomach是胃部的一種疾病：the soft inside wall becomes swollen and sore胃壁柔軟的內層會腫起來、變得疼痛，and you often feel a burning pain常常會有灼熱的痛感，especially when the stomach is empty or after certain foods尤其是空腹的時候，或吃了某些食物之後。You may also feel sick你也可能會覺得噁心，feel full too soon很快就覺得吃飽了，or not want to eat或是不想吃東西。

Doctors use this word; it is not a casual kitchen word. It can last a few days (after a bug, after too much drink, or after a harsh painkiller) or it can last a long time.

Doctors use this word醫生會用這個字；it is not a casual kitchen word不是廚房裡隨口說說的字。It can last a few days這個病可能持續幾天 (after a bug, after too much drink, or after a harsh painkiller)（像是感染之後、喝太多酒之後，或吃了太傷胃的止痛藥之後），or it can last a long time也可能拖很長一段時間。

It is not the same as a stomach ulcer, though the pain can feel similar, and it is not the same as gastroenteritis, which is the sudden “stomach flu” that also hits the gut and often brings diarrhoea.

It is not the same as a stomach ulcer它跟胃潰瘍不一樣，though the pain can feel similar雖然痛起來的感覺可能很像，and it is not the same as gastroenteritis它跟gastroenteritis（腸胃炎）也不一樣，which is the sudden "stomach flu"那是一種突然發作的「腸胃型感冒」，that also hits the gut也會影響到腸道，and often brings diarrhoea而且常常會拉肚子。

You cannot see gastritis from the outside; a doctor may look with a small camera if they need to be sure. It has nothing to do with the English word gas, even though it starts with the same letters.

You cannot see gastritis from the outside你沒辦法從外表看出有沒有胃炎；a doctor may look with a small camera if they need to be sure醫生如果要確認，可能會用一支小攝影機來看。It has nothing to do with the English word gas這個字跟英文的gas（氣體）沒有關係，even though it starts with the same letters雖然開頭幾個字母一樣。