当然，1999年欧元问世前的德国央行要更为强大。

Of course, the Bundesbank was a more powerful presence before the inception of the euro in 1999.

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在第一个植入性调整期问世前，调整器很大，需要用手推车来推来推去。

Before the first implantable device, pacemakers were so big they were pushed around on trolleys.

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莱斯特大学研究人员的该项突破性进展导致该药问世前就阻碍了跟压力有关的情况。

The breakthrough by researchers at Leicester University could lead to pills that quash such stress-related conditions before they arise.

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