AIDS is a very serious disease. It develops when a virus called HIV has damaged the body’s defence system so badly that the body can no longer fight off infections a healthy person would usually beat.

AIDS is a very serious diseaseAIDS是一種非常嚴重的疾病. It develops when a virus called HIV has damaged the body's defence system so badly它是在一種叫HIV的病毒把身體的防禦系統破壞到很嚴重的程度時發展出來的 that the body can no longer fight off infections a healthy person would usually beat嚴重到身體再也擋不住健康的人通常打得贏的感染

The letters stand for Acquired Immune Deficiency Syndrome: acquired means you get it; immune deficiency means the defence system is weak; syndrome means a set of medical problems that appear together.

The letters stand for Acquired Immune Deficiency Syndrome這幾個字母代表Acquired Immune Deficiency Syndrome: acquired means you get itacquired意思是你後天得到的; immune deficiency means the defence system is weakimmune deficiency意思是防禦系統變弱; syndrome means a set of medical problems that appear togethersyndrome意思是一組同時出現的醫療問題

Older news and many textbooks say AIDS usually causes death. Untreated, that is still true. Though actually, with today’s medicine many people with HIV never develop AIDS, and people who do can live far longer than in the 1980s — so the tidy old sentence is tidier than the present.

Older news and many textbooks say AIDS usually causes death比較舊的新聞和很多教科書會說AIDS通常會導致死亡. Untreated, that is still true沒有治療的話，這現在仍然是真的. Though actually, with today's medicine不過實際上，有了現在的醫療 many people with HIV never develop AIDS很多HIV感染者根本不會發展成AIDS, and people who do can live far longer than in the 1980s就算發展成了，也能活得比1980年代長得多 — so the tidy old sentence is tidier than the present所以那句工整的舊說法，比現在的實際情況還工整

In English we say it as one word, like “aids”, not as four letters.

In English we say it as one word, like "aids"英文裡我們把它當一個字唸，像「aids」, not as four letters不是一個字母一個字母唸

HIV is the virus; AIDS is the late, very serious stage. They are not two names for the same thing.

HIV is the virus; AIDS is the late, very serious stageHIV是病毒；AIDS是後期、非常嚴重的階段. They are not two names for the same thing這兩個不是同一件事的兩個名字