Vaccines of this type are created by inactivating a pathogen, typically using heat or chemicals such as formaldehyde or formalin.

这种类型疫苗是通过灭活病原而， 通常使用热量或甲醛或福尔马林等化物质。

Each one was drained of blood, with a shaven head, the bodies grey in colour and infused with acrid-smelling formalin to preserve them.

每个尸都被抽干了血液，头被剃，呈灰色，并浸透了刺鼻福尔马林以防腐。

As with organisms or viruses used in killed or inactivated vaccines, this can be done via treatment with a chemical such as formalin, or by using heat or other methods.

对于灭活或灭活疫苗中使用物或病毒， 这可以通过用福尔马林等化品处理， 或通过加热或其他方法来完成。