After a free fall of four to five seconds , the body strikes the water at about 75 miles an hour .
在四到五秒的自由落体后，人的身体击中水面，速度大约75英里（120公里）每小时。
The funny thing was that he remained standing there for at least four or five seconds , gently swaying .
事情有些蹊跷；他仍在原地站立着，至少有四、五秒钟之久，身躯轻轻地摇晃着。
four five seconds