I got to get my head straight.

我得面对现实了。

If you stop right on the threshold, and you hold your head straight, I always say, " what can you see? " And everybody always agrees.

如果你站在门槛，昂起你的头，我会问，你看到什么。每个人都同意。

Okay, so the nuchal ligament, it's like a rubber band that attaches to the back of the animal's skull and then runs down its spine and keeps the head straight as it runs.

希瑟：好的，项韧带就像一根橡皮筋，附着在动物的头骨后部，然后沿着脊柱向下延伸，在奔跑时保持头部笔直。