然而，就我们今天所知，纸张源于中国的汉朝。
However, paper as we know it today has its origins in the Han dynasty of China.
然而，就我们今天所知，纸张源自于中国的汉朝。
However, paper as we known it today has its origins in the Han dynasty of China.
苹果的扩张源于很多像17岁的王尚彦这样的专业的苹果痴迷者。
The expansion is driven by customers like Wang Shangyan, a 17-year-old professed Apple maniac.
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