The normal development of the teeth and jaws may be affected by the way that a child sleeps.

孩子们牙齿和颌部的正常发育可能因睡眠的姿势而受到影响。

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Witness child development milestones and enjoy the unique ability of early childhood educators to explore the world with the children - from first toys to first lost teeth.

见证儿童成长每一个关键的脚印，享受儿童专家特有的能力去探索儿童的世界，从孩子的一个玩具到他们长出的第一颗牙齿。

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What it does: Promotes the body's absorption of calcium, which is essential for the normal development and maintenance of healthy teeth and bones.

作用：促进身体对钙的吸收，而钙对于牙齿和骨骼的正常发育并保持健康状态是必不可少的。

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Both genes are necessary for the healthy development of the palate, teeth,skull and other facial structures.

VOA: special.2009.12.22

Breast milk,they say, is the best food for the healthy development of teeth.

VOA: special.2009.03.11

It could interfere with the correct development of permanent teeth.

VOA: special.2009.03.11

Another project being carried out at the lab is looking at the signals of juvenile development left in the teeth of fossil hominids.

BBC: Hi-tech scans reveal brain of human 'ancestor'