youdao

There's no way to jump forward in the process, only backward. You can see this breadcrumb trail in action in Figure 1.

您不可能跳转到过程的前面，而是只能向后跳转。

youdao

So, the action of extending the leg backward creates a forward and upward movement (the flight phase).

因此，腿向后伸展的作用力，产生一个向前向上的运动(腾空阶段)。

youdao

Still, it was a neat trick to flip instantaneously to any frame in the movie and watch the action unwind either forward or backward.

FORBES: I want my DVD

Advisor sentiment is a backward-looking indicator of stock market action.

FORBES: Experts at Guessing the Past