barrel shape

基本解释

The ribs, extending far to the rear, are well arched but not barrel shaped.
肋骨，曏後擴展，擴張良好但不呈桶狀。
Ribs long and well sprung but not barrel shaped, extending well towards hindquarters.
肋骨長、曲率良好，但不成桶形，很好地延伸至後軀。
The chest is deep, capacious and of moderate width, having good spring of rib without being barrel shaped.
平滑，胸部：深，胸腔容積大，且寬度適中，肋骨支撐良好，但沒有桶狀胸。

The bottlenose dolphins were moving in several groups of 15 to 20, their dorsal fins and barrel shaped torsos flashing in the sun as they came up for air.
NPR: Dolphins Dodge Danger in the Bosphorus Strait
To overcome all this, LeRoy Olson, an engineer at the University of Washington, devised a barrel-shaped structure of metal rings.
ECONOMIST: 20,000 leagues under the sea
Tibaldi signatures include a clear ring around the barrel and a tie-shaped clip.
FORBES: Tibaldi Pens for Bentley