To trace the source of meat, or even leather goods, scientists can use DNA barcoding, which uses a short genetic marker from the sample to identify it.

科学家可以使用基因条形码技术（通过来自样本的短基因标记来识别物种的技术），可以追朔肉甚至是皮革商品源于什么物种。

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To remove a message from the list, you remove the marker from the resource.

从列表中删除一个消息，也要从资源上去掉记号。

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Saturday rolled around, 10 friends showed up, and we started our ride from Mile Marker 0 of the West Orange Trail at 11:30 am.

到了星期六，来了10个朋友；上午11:30我们从西奥兰治小道（ West Orange Trail)0公里里程碑开始骑。

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The Tigers pack is mobile, led by Mitchell Sargent, and they move around the park at speed and work really hard from marker to put teams under pressure.

BBC: Justin Morgan on Challenge Cup quarter-final

Messi fired a volley into the arms of Pyatov before the third duly arrived, Pique pulling away from his marker to direct a Xavi corner goalwards from 15 yards, the ball flying in off the unfortunate Rakitskiy.

BBC: Barcelona 5-1 Shakhtar Donetsk

Benjani soon wasted a glorious opportunity to extend City's lead, spinning away from his marker with a sublime first touch before blazing over with his second from six yards out.

BBC: Man City 3-1 Portsmouth