On the female's chest, the ribs and the sternum have been beautifully carved.

雌鹿的胸部部位上，肋骨民胸骨雕刻得精致传神。

The findings, published in BMC Biology, show that sternum size and shape has a direct impact on the way a bird flies.

这项研究结果发表在《BMC生物学》杂志上，研究表明胸骨的大小和形状对鸟的飞行式有直接影响。

One of Henry's hands slides up his stomach and stops, having encountered the old silver key on the chain resting over his sternum.

亨利的一只手滑向腹部，碰到了挂在他胸骨上的链子上的那把旧银钥匙， 然后停了下来。

And the keel-like protrusion on their sternums, where the flight muscles attach, shrinks or disappears, except in penguins, who repurpose their flight muscles and keels for swimming.

它们胸骨上的龙骨状突起（飞行肌肉附着的地）会收缩或消失，除外，它们将飞行肌肉和龙骨重新用于游泳。

It sits on top of the diaphragm, which is the main muscle that helps with breathing, behind the sternum - or breastbone, in front of the vertebral column, squished in-between two lungs, and is protected by the ribs.

（心脏）在膈肌（帮助呼吸的主要肌肉）上、胸骨后、脊柱前、两肺之间，被肋骨包围保护。