The biology teacher asked us about Wei Zi.

I wrote a script for a sitcom for you. I believe that even if it can't be used directly, it can be of reference value to you:

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In the face of a sudden emergency, a speeding car immediately braked, but it still couldn't dodge and hit the isolation belt. At this point, classmate A happened to pass by, immediately helped them set up a "red triangle" warning sign 50 meters away, then shouted to confirm that the driver was not unconscious, and quickly dialed 120.

"My left arm ..." The driver groaned. His left forearm was seen to have been fractured and obviously deformed. Kindhearted passers-by were ready to move the driver away from the deformed cab, and classmate A quickly stepped forward to stop him: "If you move the wounded at this time, it is very likely to aggravate the damage of blood vessels, nerves and muscles in the injured part." Some people find hard magazines as wooden boards, others take off short sleeves as bandages, clamp, tie and fix the injured parts of drivers in an orderly way, and leave their palms outside so as to check the blood circulation at any time.

"After the fracture occurs, the injured part must be fixed, which can greatly reduce the disability rate and shorten the healing time.

Subsequently, in view of the driver's right forearm bleeding, he should immediately find clean clothes, fold them into cushions and put them on the wound for dressing. Then put a cushion on the elbow socket and press it to stop bleeding. If the hemostasis effect is not obvious, you should also press the armpit to stop bleeding in order to wait for rescue.