They're looking for a change known as "barrel chest," which describes a particular posture and body shape that tends to develop as a secondary symptom of COPD.

他们在找一种叫做“桶状胸”的病变，它描述的是一种趋向于演化为COPD次要症状的特别的身体姿态或形状 .

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Why? They're looking for a change known as "barrel chest, " which describes a particular posture and body shape that tends to develop as a secondary symptom of COPD.

他们在找一种叫做“桶状胸”的病变，它描述的是一种趋向于演化为COPD次要症状的特别的身体姿态或形状 .

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Superman may occasionally have worked the chin a little more than Batman did, but all the heroes had the barrel chest, the strong arms, the square jaws and the confident smiles.

超人可能下巴比蝙蝠侠的更健壮一点，不过所有英雄都有宽阔的胸膛、强壮有力的胳臂，方形的下颚和自信的微笑。

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His big ears, barrel chest, striking blue eyes and helmet of seemingly electrified hair jet black at first and ultimately snow white made him instantly recognizable, a celebrity long before most authors were lured out into the limelight.

CNN: Newsmaker: Norman Mailer

He was not much to look at, but he had Rumpelstiltskin's own temper, and when angry which was often his fist clenched and pounded the air, his barrel chest thrust forward, and his orders shot out like a hound's bark.

NPR: Excerpt: 'Skybreaker'

My chest was concave when I was a child, but if you look closely, this is true of most children, and the weight lifting I did in prison helped with that, and while I don't actually have a barrel chest, I might have a half barrel.

NPR: Chapter 1