They change color, head and mouth shape.

它们的颜色、头和嘴巴的形态都会改变。

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Belt decorated in each inner side is used to adjust its mouth shape.

包身两侧内部分别装饰有可调节皮带，让你随心所欲的调节包口大小形态。

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Use the first mouth shape to play single notes and the second one to play chord with tongue block.

吹十孔口琴一般都是用第一种，吹和弦或者使用舌堵法时就要用第二种口形了。

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She spent time in front of a mirror, retraining the shape of her mouth, forcing her lips into a long oval "O" to evoke Ms. Garland's face in midbelt but pulling back when the look turned clownish.

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Over the years the word had moulded itself to the shape of an African mouth.

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The mouth is often in an "O" shape from shock.

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