A special protein your body makes when something foreign gets in — a virus, a bacterium, or another bit that should not be there. Antibodies stick to that thing and help your immune system find it and break it down.

A special protein your body makes你的身體會製造出一種特殊的蛋白質， when something foreign gets in當外來的東西進入身體時—— a virus, a bacterium, or another bit that should not be there像是病毒、細菌，或其他不該出現在那裡的東西。 Antibodies stick to that thingantibody會黏在那個東西上， and help your immune system find it and break it down幫助你的免疫系統找到它、把它分解掉。

After an illness or a vaccine, some of those antibodies stay, which is why you may fight the same germ more easily later. A blood test can look for them to see if you have met a disease before.

After an illness or a vaccine在生病或打疫苗之後， some of those antibodies stay有些抗體會留下來， which is why you may fight the same germ more easily later這就是為什麼你之後可能比較容易對抗同一種病菌。 A blood test can look for them驗血可以檢查這些抗體， to see if you have met a disease before看看你以前是不是接觸過某種疾病。

Though actually, the “body” here is not your arms and legs; English copied German Antikörper, where “body” means a substance. People mix this with antibiotic: one you make inside you; the other is a drug you take.

Though actually, the "body" here is not your arms and legs不過其實，這裡的『body』不是指你的手腳； English copied German Antikörper英文是照搬德文的Antikörper， where "body" means a substance那裡的『body』指的是一種物質。 People mix this with antibiotic人們常把這個字跟antibiotic（抗生素）搞混： one you make inside you一個是你自己體內製造出來的， the other is a drug you take另一個是你吃的藥。