Each year, the city digs up about 10,000 tons of old cobblestones as it rebuilds or repaves its streets. It used to discard them along with other rubble.

因为要重建或重铺街道，巴黎每年都要挖掘出大约1万吨鹅卵石，以前总是把它们和其他瓦砾一起丢掉。

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Each year, the city digs up about 10,000 tons of old cobblestones as it rebuilds or repaves its streets. It used to discard them along with other rubble.

因为要重建或重铺街道，巴黎每年都要挖掘出大约1万吨鹅卵石，以前总是把它们和其他瓦砾一起丢掉。

youdao