Their emergence brought undreamed-of prosperity ; but also carnage on a scale hitherto unimaginable .
他们不仅带来了意料之外的繁荣,而且也造成了迄今为止难以想象的大规模杀戮。
Things of unimaginable complexity , that we don 't even understand and none of us could design .
事物难以想象的复杂程度让我们根本无法想的清楚,也没有人能够设计。
Long-tongued bees grasp the fragile flowers in their teeth , fold back their wings , and vibrate with unimaginable intensity to buzz-pollinate the blossoms .