Forward and backward Walks 前进及后退基本常步 ; 前进及后退常步
The Walk Forward And Backward 走步
forward and backward bending tester 往复弯曲试验机
Forward And Backward Change 前进后退换向步
Forward and backward integration 一体化 ; 向前一体化
Forward and Backward Chaining 正反向混合推理
Forward and Backward Changes 向前与向后的换步
Progressive Walks Forward and backward 渐进一渐退步 ; 渐进的前进和后退步
On the first day of school, Socrates told his students, "Today, we'll only learn one thing. That is to swing your arm forward and backward."
在开学的第一天,苏格拉底告诉他的学生:“今天,我们只学一件事情。那就是前后摆动你的手臂。”
Forward and Backward Movements.
前进以及后退。
Practice moving forward and backward through your slides.
要练习前后移动幻灯片。
So, you reinforce the pig for walking forward and you punish the pig for walking backward.
那你就对这头猪向前走的行为给予强化,如果它向后退,你就惩罚它。
And now since it's reversible, we can run it forward or backward.
因为它是可逆的,所以可以正方向运行。
If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.
如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上
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