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The boy has a rare and potentially fatal condition called Long Segment Congenital Tracheal Stenosis, in which patients are born with an extremely narrow airway.

这个男孩患有一种罕见的称为“先天性长段气管狭窄”的有潜在致命性的疾病，这让他从出生就有较常人非常狭窄的气道。

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The scale of each segment is determined not by the limits of the material, but by the narrow doors of the historic V&A building.

每部分构件的尺度并非受到材料的限制，而是取决于V&A博物馆狭窄的入口通道。

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"There is intense competition for what turns out to be a narrow segment that has the skills we are looking for, " said Jim Pilarski, the head of HR for Asia Pacific, Middle East and Africa for hotel chain operator Marriott International Inc.

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The narrow-body aircraft segment is shaping up to be the next important battle ground for global aircraft manufacturers.

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