沙蚤叮咬治疗与技巧在这个自由视频从消防队员急救。
Treat sand flea bites with tips from a firefighter in this free video on first aid.
经蚤类叮咬所致的间接传播是染疫啮齿动物与人之间最常见的传播方式。
Indirect transmission through the bite of a flea is the most common route of transmission between plague-infected rodents and humans.
经蚤类叮咬所致的间接传播是染疫啮齿动物与人之间最常见的传播方式。
Indirect transmission through the bite of a flea is the most common route of transmission between plague-infected rodents and humans.
应用推荐