Inspect the front brake pads and rear brake linings.

检查前刹车垫和后刹车衬。

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I found that one of the rear brake pads had fallen out.

我发现一个后轮刹车片已经下降了。

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I found that one of the rear brake pads had fallen out.

我发现一个后轮刹车片已经下降了。

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