There are many factors that cause the characters segmentation task difficult, such as image noise, plate frame, rivet, space mark, plate rotation and illumination variance.

车牌字符分割中存在噪声干扰、边框影响、铆钉和间隔符影响、车牌旋转、光照不均等问题。

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These contradictory versions arise because rulers and clocks—the things that mark time and space—are not the same for different observers.

之所以有这样矛盾的观点，这是因为“标尺”和“时钟”——它们标志着事件所在的时间和空间，它们对于不同的观察者来说是不一样的。

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Their departure leaves three space station residents, as well as Endeavour's six-man crew commanded by Mark Kelly, husband of wound Rep. Gabrielle Giffords.

他们离开了，留下了三个空间站居民，以及由马克·凯利（受伤众议员加布里埃尔·吉福兹的丈夫）指挥的奋进号的六名成员。

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Mark Nappi from United Space Alliance, NASA's largest shuttle contractor, says job cuts at the Kennedy Space Center could be just the beginning.

VOA: standard.2010.03.18

"There's often a lot of reluctance to accept alternatives, including commercial solutions, because they are seen as threats to the big space programs, " says Mark Dankberg, chief executive of ViaSat Inc.

WSJ: U.S. to Trim Commercial-Satellite Use

In 1992, the U.S. space shuttle Endeavour took off with a crew that included Mark Lee and Jan Davis, the first married couple in space.

CNN: Friday,

Phillips could have scored soon after the half-hour mark when, having cleverly engineered space, he shot inches wide.

BBC: fa-cup