Up the street they went, past stores, across a broad square, and then entered a huge building.

他们沿着大街走去，经过许多商店，穿过一个大广场，然后走进一座大厦。

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Down the street they went, past stores, across a broad square and then entered a huge building.

他们沿着大街走去，经过一家家店铺，穿过一个宽敞的广场，然后走进一幢大楼。

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