But without such a breakthrough, fast-track extension, too, seems a non-starter.

但是如果没有这样的突破，“快行道”延期看起来希望不大。

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The idea for this breakthrough came from the earlier observation that benign microorganisms of the gut send survival signals to the GI track epithelium.

这个重大突破的想法来源于早些时候对内脏良性微生物发送生存信号到GI上皮细胞的观察。

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Getting a gold medal on track and field was a major breakthrough for China.

在田径项目取得金牌，是中国一个重大突破。

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TrakdotTM delivers breakthrough products that empower consumers to keep track of the people and things they hold dear.

ENGADGET: Trakdot Luggage hands-on: find your lost bags Hands-on