沓中是古代地名，地理位置约在今甘肃省舟曲县，是一个处于岷山、迭山环抱中的小型盆地。历史上三国时蜀国将领姜维曾屯兵此处。三国时蜀汉将领赵云次子赵广战死于此地。
他们从纸堆中拿出一沓一沓的纸，整理好并放入信封中。
They took sheets of paper off piles, collated them and put them into envelopes.
但如果能从电子邮件中收到某个朋友新生小孩的一张近照，或是某个亲人的假期留影，显然会比收到一大沓过期的相片要有趣得多。
Ago. It's much more fun to receive a recent PIC of a friend's new baby or relative's vacation by email, than to slog through a pile of outdated photos later on.
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