When she started cycling again, her back wheel wobbled badly, so she got off to take a look at it.

当她再次骑车时， 后轮晃得厉害， 于是她下车去看。

I then asked eighteen blind volunteers to feel the wheels and assign one of the following motions to each wheel: wobbling, spinning fast, spinning steadily, jerking or braking.

之后，我邀请了 18 位盲人志愿者去触摸一下这些轮子（的图画）并且将以下运动方式指定给每个轮子（的图画）：随意转动、快速转动、匀速转动、颠簸和刹车。