The sheer scale of the investment it took to begin commercial expansion at sea reflects the immensity of the profits that such East-West trade could create.
在海上进行商业扩张所消耗的投资规模之大，反映了这种东西向贸易所能创造的巨大利润。
2
Further evidence for persistent internal rhythms appears when the usual external cycles are shifted—either experimentally or by rapid east-west travel over great distances.