mouth to mouth respiration

例句：

1. 1. Duringthe cold weather, people often use mouth-to-mouth respiration to stay warm.
   在寒冷的天气里，人们经常使用口对口呼吸来保暖。
2. 2.The elderly need to pay attention to their health and avoid mouth-to-mouth respiration.
   老年人需要注意自己的健康，避免口对口呼吸。
3. 3.During a firefighting exercise, everyone should practice mouth-to-mouth respiration to save themselves.
   在进行消防演习时，每个人都应该练习口对口呼吸来保护自己。