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The little boy was sucking his thumb.
小男孩儿吮着拇指。
youdao
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The baby was sucking its thumb.
婴儿正在吮大拇指。
youdao
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Thumb-sucking can cause protrusion of the teeth.
拇指能使牙齿向外突出。
youdao
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There is less thumb-sucking among breast-fed babies.
母乳喂养的婴儿中吮拇指的情况比较少。
youdao
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There is less thumb-sucking among breast-fed babies.
母乳喂养的婴儿中吮拇指的情况比较少。
youdao