常見例句雙語例句The largest developed economies are struggling and weak prospects for next year are being scaled back further.最大已開發(fā)經(jīng)濟躰都在預期明年弱勢前景奮鬭。權威例句But that still leaves the problem of smoothing production at the factory to preserve the economies of scale, which even in modern scaled-down plants require a throughput of about 250, 000 cars a year.ECONOMIST: Fighting back 返回 scale economies