It lasted six years from their first exchange of letters to Martin's arrival in the United States.

从他们第一次交换信件到马丁到达美国，这段时间持续了六年。

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"This dynamic has contributed to a new appreciation of communication itself, which is seen first of all as dialogue, exchange, solidarity and the creation of positive relations," he said.

“这种活力有助于对交流进行新的评价，这是进行对话，交换，团结和创造积极关系的的第一步，”他说。

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The first one is on the exchange rate of RMB.

一是关于人民币汇率问题。

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In fact, the idea of the stock exchange goes back to the fourteenth century, when in Flanders the first stock exchange called The Bourse was established.

事实上,股票交易所的诞生,可以追溯到14世纪,那时候在佛兰德斯,一个叫做,The Bourse的股票交易所成立了

耶鲁公开课 - 金融市场课程节选

But since that first exchange of letters, the news has been anything but favorable for Yahoo!

FORBES: Magazine Article

And the Scotland midfielder was injured in the first exchange of the second half after coming down awkwardly on his ankle.

BBC: SPORT | Football | Internationals | Scotland 3-1 Ukraine

According to Bitcoin-Central, it's the first exchange of the digital currency to be licensed to operate as a bank and function within the framework of European regulations.

ENGADGET: Bitcoin-Central becomes first Bitcoin exchange licensed to operate like a bank