Scientist writes a formula on a board, then the scientists run and jumps in the water. Then, people water ski in the water pulling by a boat.
Scientist writes a formula on a board, then the scientists run and jumps in the water. Then, people water ski in the water pulling by a boat. a woman water ski
while two men explains the movements made by the girl. under thesand the boat pass a boat in the water. and jumps underneath the boat. in a lake that has waterfalls.