Pity the postal systems of the large economies. Many had centre stage during the development of communications. Letters, telegraph messages and, later, phone calls all came under their watch. Then digital came along.
請憐憫一下大型經濟體的郵政系統吧。在通信發展時期，郵政系統處于中心位置，信件、電報還有后來的電話都隸屬于郵政系統。然后數字化來了。
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