Whooping cough is very prevalent just now.百日咳正在广泛流行.Measles, mumps and whooping cough are spreading again because children are not being vaccinated.因为孩子们没接种疫苗，麻疹、腮腺炎和百日咳又蔓延开来。Have you had your child vaccinated against wh...
Measles, mumps and whooping cough are spreading again because children are not being vaccinated.因为孩子们没接种疫苗，麻疹、腮腺炎和百日咳又蔓延开来。Whooping cough is a serious respiratory disease caused by Bordetella pertussis.百日咳是一种由百日咳杆菌引起的严重的...
多数饲养家禽的农场主不得不依赖商业化生产的饲料。Most poultry farmers have to rely on commercially manufactured feeds.家禽身上发现的污染物，在禽蛋里也会有。Contaminants found in poultry will also be found in their eggs.班热博士饲养家禽、猪和羊。Dr Binger keeps poultry, pigs an...