Optimum currency area - Wikipedia, the free encyclopedia

In economics, an optimum currency area (OCA), also known as an optimal currency region (OCR), is a geographical region in which it would maximize economic efficiency to have the entire region share a single currency. It describes the optimal characteristi...

【可愛】被剃毛的狗狗....自尊心全無了~~

好可憐...但又好可愛>////...

開播了也不講...偷看美女圖被抓包了

大冏!!哈哈 ...

外國人的暑假vs你的暑假這就是差異

左邊的圖  好像只有天色的變幻...XD ...

為什麼這個美女願意嫁給怪獸 原來秘密就是.....

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