The us received the bittersweet news today that our economy is growing again , at a rate of 3.5 % per year .
今天,美国收到了苦乐参半的消息:我们的经济再次达到3.5%年增长率。
Wars provide the sharpest example of the innovative power of government spending : astounding new developments in drone and prosthetic technology-let alone the jet engine-are a bittersweet testament to that .