Risk assessment 5 Adolescent play 3 Adventure sport 3 Child’s play 3 Double bounce 3 Dynamic models 3 Dynamics models 3 Energy transfer 3 Energy-transfer 3 Injury prevention 3 Kinetic and potential energy transfer 3 Potential energy 3 Reliability analysis 3 Risk management 3 Risks management 3 Trampoline safety 3 Vibration analysis 3 adolescent play 3 adventure sport 3 children’s play 3 double bounce 3 injury prevention 3 kinetic and potential energy transfer 3 risk management 3 trampoline safety 3 China 2 Drought 2 Drought characteristics 2 Rivers 2 Watersheds 2