从罗马时代以来，它就和皇室紧密的联合在了一起。
From the Roman era, it jointly, and the royal family close together.
说得更具体点，从古罗马时代以来，在过去的两个世纪里，492个品种中已经有480种灭绝了。
More to the point, 480 of the 492 species made extinct since Roman times have disappeared in the past two centuries.
从古罗马时代算起，莱顿从'世纪以来就已经拥有重要的纺织工业。
Dating from Roman times, Leiden has had an important textile industry since the 'th century.
从古罗马时代算起，莱顿从'世纪以来就已经拥有重要的纺织工业。
Dating from Roman times, Leiden has had an important textile industry since the 'th century.
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