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1·Adventurer: Ok. Here is Lake Itasca, the true source of the Mississippi.

探险者：好了。这就是伊塔斯卡湖，密西西比。

2·Indeed, last year, Knowles Acoustics of Itasca, Illinois, which has been making MEMS microphones since 2003, became the first manufacturer to have shipped a billion of the devices.

事实上，伊利诺伊州伊塔斯加的楼氏声学，这家从2003年起制造MEMS麦克风的公司，在去年成为第一家出货量突破十亿大关的制造商。