Justin:Hi.I want to get these rollerblades. 你好。我想要买双溜冰鞋。
Sales Clerk: Have you ever tried rollerblading before? 你以前滑过旱冰吗？
Justin: No it's my first time. I hear its great exercise. 没，这是我首次滑。我听说这是个非常不错的运动。
Sales Clerk：I recommend you get some knee pads and a helmet. 那样我建议你买护膝和头盔。
Justin: Oh, OK. I guess you can never be too careful. 哦，好啊。我想再如何小心也不为过。