亿

• The youngest rocks found on the moon are 3 billion years old .
  在月球上发现的地质年代最晚的岩石已有30亿年历史了。
• Union members had to come up with $462. 2 million in concessions .
  加入工会的职工得以降低工资的方式提供4622亿美元。
• As a slowly contracting dwarf the star may remain luminous for billions of years .
  收缩较慢的白矮星仍会发光几十亿年。
• The total cost of the system's hardware could run to $150 million or more.
  这套系统的设备总价值可达一亿五千美元或更多。
• Mexico needed $1 billion to avoid defaulting on loans to new york banks.
  墨西哥需要十亿美元以免拖欠一些纽约银行的贷款。
• This cubic inch of hydrogen would contain about 880 billion billion atoms .
  这一立方英寸的氢就将含有大约88万万万亿个原子。
• By this means the age of the earth had been estimated at several hundred million years .
  用这个办法推算出地球的年龄是数亿年。
• The united states used approximately 270 billion gallons of water per day in 1960 .
  1960年美国每天用水量大约为二千七百亿加仑。
• Its sales organization is supported with an advertising budget of $100 million per year.
  它的销售组织每年得到一亿美元的广告费。
• The oldest sediments cored to date are about 150 million years old .
  到目前为止取出的最老沉积物的岩心是大约15亿年以前的生成。