The millimeter-wave machine is grayish-white and is more cylindrical.

而毫米波扫描仪则是灰白色的，有些像圆柱形。

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When these folks want to return, they simply wave a white flag and the conductor stops the train for them.

当村民们想要搭乘火车时只要挥动一面白旗，售票员就会让火车停下来。

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WITH the damp of a rainstorm still hanging in the evening air, a human wave bore down on Jerusalem's old city from the west, engulfing the cool stone walls in a blue-and-white sea.

尽管晚空中依旧弥漫着暴风雨的气息，而自西而来的人群仍源源不断的涌向耶路撒冷（Jerusalem）老城［注一］，把冰冷的石墙淹没在蓝白色的海洋［注二］之中。

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Syracuse needs a home grown Under Armour, or White Wave Foods, or Starbucks, relatively new companies whose headquarters provide large numbers of jobs in Baltimore, Dallas and Seattle.

FORBES: Syracuse Can Rise Again, But Only If The Entrepreneurs Return

But does Mayer totally give up and wave the white flag?

FORBES: Diary of a Mad Entrepreneur and His 6-Figure Kickstarter Launch

The loss in court meant Armstrong faced an impossible choice: either go forward under accelerated USADA procedures that made a meaningful defense all but impossible, or wave the white flag and risk being branded guilty as charged.

FORBES: The Kafkaesque Trial Of Lance Armstrong: A Former Federal Prosecutor On The US Anti Doping Agency's Disregard For Due Process