If Britain followed Switzerland into the border-free zone, "half the Chinese tourists on the continent would head to London on the Eurostar, " says Mr Zhou.

周先生说，如果英国尾随瑞士加入这个免签区域，“到访欧洲大陆的一半中国游客都会挤上欧洲之星杀向伦敦。

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Both Switzerland and Denmark chose not to join the euro zone.

瑞士与丹麦都选择不加入欧元区。

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Ahead we have a plethora of macroeconomic drivers including GDP readings from Switzerland and the Euro-zone region.

未来，在瑞士和欧元区，将会出现一个包括GDP数据在内的宏观经济数据过量。

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Most EU countries, and some others including Switzerland and Norway, are in the Schengen zone, where border controls for those countries' citizens are minimal or non-existent.

BBC: Germany mulls Schengen veto on Bulgaria and Romania

In Switzerland, which like the U.K. isn't part of the euro zone, the central bank has used the euro as its external reference point in its efforts to keep the Swiss franc's value stable.

WSJ: Banks Prep for Life After Euro

Then on Wednesday, Switzerland, not a member of the EU but part of its passport-free travel zone, invoked a special safeguard clause that allows it to cap the number of workers from 28 European countries.

WSJ: Europeans Stay Rooted, Despite Economy