He showed his friends, and for his birthday he got pads and new roller blades!

过生日时，他又得到了一副护膝和一双新旱冰鞋。

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Two boys in roller blades are pulled and pushed by younger ones at a park in Manila.

在马尼拉一座公园里，两名穿着直排轮的男孩被年幼孩童推拉着。

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In order to reduce vibration between roller pieces and saw blades on the process of sawing, we need reducing noises radiation.

为了减小轧件和锯片在锯切过程中的振动，降低噪声辐射。

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Jason then continued his journey on roller-blades until he was hit by a drunk driver, breaking both his legs and landing him in intensive care.

BBC: Jason Lewis: Circumnavigating the world