MADRID (MarketWatch) - European stock markets were trading mostly weaker on Friday, with many exchanges closed ahead of the Christmas holiday and volume thin.
欧洲股市周五开盘小幅走低，欧洲多国股市在圣诞假期前休市，交易量清淡。
The unprecedented surge in competition has caused many exchanges to seek safety in size. Indeed, takeover speculation has sent the prices of shares in exchanges soaring (see chart 1).
这种空前的竞争浪潮使得一些交易所通过扩大规模来寻求安全。
All along these four years, many exchanges have taken place, involving PhD students, post-docs and permanent staff.
四年内，进行了很多交流，包括博士生，博士后和工作人员。
All along these four years, many exchanges have taken place, involving PhD students, post-docs and permanent staff.
四年内，进行了很多交流，包括博士生，博士后和工作人员。
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