on-off push button 合 ; 合分按钮
So this is going to teach you to push off on my back and then rolls to my side.
这里将要教你出发后仰卧,然后转为侧卧。
Put on your favorite pair of fins and push off on your back with arms in streamline.
戴上你最喜欢的脚蹼,双臂和身体呈流线型,蹬壁出发。
Push off on your stomach with your hands in streamline and lock your head between your arms.
在你的胃和推离你的手在你的头之间通畅和锁你的手臂。
That's, there are whole courses on that, there's some great courses here on that, it takes some mathematical sophistication, we're going to push that off a little bit.
有一些课程是专门讲这个的,那些课一般都涉及,一些复杂的数学问题,我们只是简单的讲一些基础知识。
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