A biohazard is something living, or from a living thing, that can hurt people’s health — a dangerous virus, a kind of bacteria, infected blood, or waste from a hospital lab.

A biohazard「biohazard」 is指的是 something living, or from a living thing某種活的東西，或來自生物的東西 that can hurt people's health會傷害人體健康 — a dangerous virus一種危險的病毒, a kind of bacteria一種細菌, infected blood受感染的血液, or waste from a hospital lab或是醫院實驗室的廢棄物。

You will know the idea from the orange warning sign with three curved claws; that sign means “this could make you ill if it gets into you.” Labs, hospitals, and waste trucks use the word.

You will know the idea你會從 from the orange warning sign一個橘色、上面有三個彎爪圖案的警告標誌 with three curved claws(併入前) 認識這個概念; that sign means這個標誌的意思是 "this could make you ill if it gets into you.""這東西一旦進入你體內可能會讓你生病。" Labs, hospitals, and waste trucks實驗室、醫院和廢棄物處理車 use the word都會用這個字。

It is serious and official, not a joke word in careful speech, though people do stretch it in films and games for anything “gross and dangerous.” Though actually, a biohazard is not the same as a poison bottle or a radiation sign: the danger is biological, not a chemical burn and not radioactivity.

It is它是個 serious and official, not a joke word正式而嚴肅、在講究用字時不是個玩笑話 in careful speech(併入前), though不過 people do stretch it人們在電影和遊戲裡確實會把它擴大用 in films and games(併入前) for anything "gross and dangerous."泛指任何「噁心又危險」的東西。Though actually不過其實, a biohazard「biohazard」 is not the same as跟 a poison bottle毒藥瓶 or a radiation sign或輻射標誌不一樣: the danger is biological這裡的危險是生物性的, not a chemical burn and not radioactivity不是化學灼傷，也不是輻射。

Bio- here means “from life,” and hazard means “danger.” Something can be a biohazard even if you cannot see it.

Bio-「bio-」 here在這裡 means意思是 "from life,""來自生命", and而 hazard「hazard」 means意思是 "danger.""危險". Something可以有東西 can be a biohazard是 biohazard even if you cannot see it即使你看不見它。