例句與造句

1. Walking shoes should have a firm heel, good shock absorption, a smooth tread, and a rocker sole that encourages the natural roll of the foot.
2. The smooth tread provides a better grip for the motor; the effect on how the tire grips the road was not noticeable, but I would advise caution on slick or sandy surfaces.
3. It's difficult to find smooth tread in a sentence. 用smooth tread造句挺難的