I'm often shown on TV as blue, but I'm actually more of a gray color with a white belly.

电视上的我通常是蓝色的，但实际上的我更多的是灰色，腹部发白。

youdao

Enmeshed within the net and bleeding still but already dead was a huge shark, perhaps ten feet long, its white belly shining in the morning sun.

网里网住的是一条还淌着血的大鲨鱼，已经死了，约莫有10英尺长，白色的肚皮在晨光下闪闪发光。

youdao

Tires blew, steel snapped, and the landing gear folded. The burning aircraft teetered to port, then the belly hit the concrete and skidded along, trailing a torrent of hot white sparks.

轮胎爆炸，钢架折断，起落架扭曲成废铁，还在燃烧的飞机摇摇晃晃地倒向左边，机腹落在水泥铺就的地面上开始滑行，擦出一串灼热的白色火花。

youdao

Its belly was white as an egg, soft, dry and shiny like polished leather and undulating with breaths.

BBC: Tagging crocodiles in Belize

It was just four feet long, but strong, with a brown body, white belly and baleful, brownish-yellow eyes.

WSJ: Fishing for Shark in Destin, Fla.

The mother falcon, sleek and gray with a banded gray and white belly, squawked furiously as Nadareski crawled toward the box.

WSJ: 4 falcon chicks living on NY-NJ bridge are banded