First, narrowcasting means that television channels are seen by an increasingly narrow segment of the audience.

首先，窄播意味着越来越少的观众收看电视频道。

youdao

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。

youdao

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。

youdao

This person's views on race and other matters, clearly appeal just to a very narrow segment of the right in this country, and I think that says a lot about where this administration is right now.

NPR: Roundtable: Rice, Rumsfeld in Iraq, 'United 93'

"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.

WSJ: In China, Recruiting Gets Social

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

FORBES: Boeing Can Climb To $91 With 737 Max