The calf has two lower jaws, but only one mouth.
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but only one mouth
但只有一张嘴
以上为机器翻译结果，长、整句建议使用 人工翻译 。
A person has two ears but only one mouth.
人有两只耳朵，但只有一张嘴。
youdao
小牛犊有两下颚，但只有一张嘴。
We have two ears, but only one mouth, so you should listen more and talk less.
⊙、我们两只耳朵，但只有一张嘴，所以应该多听少说。
The researchers used the same morphed images, but cropped each face to reveal only one of four facial features: eye, mouth, nose, and skin.
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