What accounts for the great outburst of major inventions in early America -- breakthroughs such as the telegraph, the steamboat and the weaving machine?

• Account

  • 作名词常用搭配：on account of 由于，因为；on no account /not on any account决不；绝对不。
  • 作动词时：Account for sth. 有三层意思。占〔一定数量或比例〕:Afro-Americans account for 12% of the US population.非洲裔美国人占美国人口的 12%；是…的原因 Recent pressure at work may account for his behavior. 他的行为也许是最近的工作压力导致的；解释，说明Can you account for your movements on that night? 你能解释一下那晚的活动吗？
• Outburst: 爆发
• Breakthrough：重大突破。

  • 外刊例句：Given these differences, expectations for any major breakthrough from this visit are low.由于存在这些分歧，人们对这次访问取得任何重大突破的期待很低。

Among the many shaping factors, I would single out the country’s excellent elementary schools; a labor force that welcomed the new technology; the practice of giving premiums to inventors; and above all the American genius for nonverbal, “spatial” thinking about things technological.

• single out：挑出，特别之处。

  • 外刊例句：He singled out corruption as the root cause of the country's woes.他指出腐败是该国苦难的根源。
• Excellent /outstanding/splendid /eminent
• elementary school:小学；Junior high school:初中；senior high school：高中；elementary rights基本权利
• 和钱有关的单词：premium：奖、奖金；cash现金；buck美金；coin硬币；note纸币；banknote钞票；fund 资金；change零钱；commission佣金；tuition学费；fare票价；admission入场费；cost成本；freight运费；postage邮费；rent租费；tip小费；red packet红包；phone bill电话费