| 1. | Figure 7－13(a) shows a man standing on frictionless roller skates on a level surface, facing a rigid wall .
图713（a）表示一个人穿着无摩擦的有轮滑冰鞋站在水平平面上，面对着一堵坚硬的墙。 |
| 2. | Hello , and welcome to the sixth annualskate - off
你们好，欢迎来到第六届轮滑大会 |
| 3. | You can believe that . we need to have a skate - off
你相信吧我们再来个轮滑比赛 |
| 4. | Meimei roller skating games - 4455 miniclip games
美眉轮滑小游戏- 4399小游戏 |
| 5. | The 1978 sweetwaterskate - off champs are -
1978年斯威沃特轮滑大赛冠军得主… |
| 6. | A big roundofapplause forall these skaters
再次给这些轮滑手致以热烈掌声 |
| 7. | The sweetwater rollers and the garden boys
是斯威沃特轮滑队还有花园男孩 |
| 8. | A big roundofapplause forall these skaters
再次给这些轮滑手致以热烈掌声 |
| 9. | The 1978 sweetwaterskate - off champs are -
1978年斯威沃特轮滑大赛冠军得主 |
| 10. | Sweetwater rollers , group skate champions
斯威沃特轮滑高手群滑组冠军 |
