当你静坐在静止的自行车上，你摔倒在地时，你的头部是以每小时7英里的速度着地，足可以导致你的头骨破裂而死亡。
If you fall over while SITTING STILL on an UNMOVING bicycle and strike your head on the ground, your head "travels" FASTER than the 7 miles an hour it takes to fracture your skull and KILL you!
随着视频的继续，你可以看到老师被连续地摔倒在地上，直到她躲进了看起来像一个壁橱的地方。
As the video continues, you see the teacher thrown to the ground repeatedly until she takes a shelter in what looks like a closet.
不， 我意思是，摔倒在地，然后你就不用去比赛了。
No, I mean, like, fall down on the ground so you won't have to play.
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