Sometimes it is: the bowand arrow, the spinningjenny and the computer were all adopted because theyallowed extraordinary gains in productivity.
有时候是这样:弓箭、珍妮纺纱机、计算机的使用是因为他们带来非凡的生产力优势。
2
I can't imagine anything since the invention of the spinningJenny that will so profoundly change the lives of people in the deepest rural parts of the emerging market.