Not much is known about the eel's large mouth, but it's thought to help capture small crustaceans.

关于其大嘴的用途，目前科学家们还知之甚少，但比较公认的看法是帮助捕猎小型甲壳类动物。

youdao

The lipid and fatty acid composition of muscle of three species of cultured freshwater fish, silver carp, blunt snout bream, large mouth black bass, was examined in this paper.

测定了鲢、大口黑鲈和团头鲂三种养殖淡水鱼肌肉脂质的含量、分布、成分及脂肪酸组成，调查了鲢肌肉脂质含量与体重的关系。

youdao

It now has legs, eyes, a mouth and a large body.

它现在有腿、眼睛、嘴巴，还有一个庞大的身体。

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"For large animals like beef, a very large fraction of the nitrogen that enters the cow's mouth is excreted out the back end."

VOA: special.2011.04.05

It went up and up. I followed the trail for several hundred meters more until I came to the mouth of a large cave.

VOA: special.2010.07.10

For a certain subset of American tourists, however, the lure of greatest luster is the large-mouth bass.

FORBES: Forbidden Bass

She had a crude face with small eyes and a large, downturned mouth, but she did not look unkind.

NEWYORKER: Election, Monitored

On the hallway wall hung a black-and-white photograph of a young woman with penetrating eyes and a mouth too large for her face.

NEWYORKER: Sweetheart Sorrow