English knowledge of preventing drowning

1, no swimming without permission;

1. Do not swim without permission;

2, are not allowed to swim with others without authorization;

2. Don't swim with others without authorization;

3. No swimming without parents or teachers;

4, are not allowed to swim in unfamiliar waters;

4. Don't swim in unfamiliar waters;

5, are not allowed to swim in the waters without safety facilities and ambulance personnel;

5. It is not allowed to swim in waters without safety facilities and ambulance personnel;

6. Non-aqueous students are not allowed to go into the water for rescue without authorization.

6. Students who don't understand water are not allowed to go into the water for rescue without authorization.