If you look back tracks , you gonna see a nice smooth “s” shape, as it supposed to “zig-zag”. Let’s have a go.

当你回头看看你滑过的轨迹，你会看到一个流畅的S形而不是你所认为的Z形。让我们试一下。

I had a hunch and thought, " Go for it." Sorry, back track.

我只是有种预感 " 追到她吧" 抱歉 收回这句话。

Tom turned upon the back track at once, and hurried his steps.

汤姆立刻转向后路，加快了脚步。

The wolf started on toward the place from where the call surely came, then returned to him, sniffing noses and making actions as though to encourage him. But Buck turned about and started slowly on the back track.

那条狼仍然继续跑向发出呼唤声音的地方, 不过很快又返回巴克身边, 与他碰了一下鼻子, 做出一些动作, 仿佛在督促他向前走, 但巴克却转过身, 慢慢地踏上了回头之路。