Carrying large black plastic bags or wearing backpacks, they look through the stalls along the street.

携带大型黑色胶袋或穿背包，他们期望通过摊位沿著这条街。

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The two explosives were placed in black bags or backpacks, the FBI has said, and officials said the bag seen in the video seemed to be made from material similar to the shreds of black nylon found at the bombing site.

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