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Snow:
Snow, could I ask you some questions about membership of WTO? 
肖恩，我可以向你提问几个关于WTO成员国的问题么？
Sean:
Of course!
当然！
Snow:
Do you know how many countries belong to it?
你知道WTO有多少成员国么？
Sean:
En, recently, there are 142 countries or regions belonging to the WTO. And 29 other countries are being discussed, including Russia, Ukraine, Saudi Arabia, and so on.
嗯，目前有142个国家或地区是WTO的成员国。另外，还有29个国家的成员国资格正在进行讨论；包括俄罗斯、乌克兰、沙特阿拉伯等。
Snow:
Terrific! Could you point out some important countries or regions?
棒极了！你能指出一些重要的国家或地区么？
Sean:
Sure. Members include the top four trading powers which are the European Union, the United States, Japan and Canada.
可以。其中包括四大贸易经济体系，它们分别是欧盟、美国、日本和加拿大。