柯林斯詞典biohazard /?ba????h?z?d/ 1. N material of biological origin that is hazardous to humans 有害生物源質(zhì) 返回 biohazard劍橋詞典something, such as a disease or a chemical , that may harm people , animals , or the environment 生物危害，對生物有害 返回 biohazard