Fires in California continue to burnout of control, and several small towns in the forests near San Francisco are still in danger.
加州大火火势继续失控，旧金山附近的森林中的几个小镇仍处于危险之中。
2
The inventor Henry Bessemer discovered that directing a blast of air at melted iron in a furnace would burnout the impurities that made the iron brittle.