Exercise is necessary for strong bones and both heart and lung health.

锻炼对强健骨骼和心肺健康都是必要的。

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He had got down to the bare bones of it, and they were fine and strong and simple.

他已经到了它骨干的部分，它们美好，结实，简朴。

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It gives us strong bones (骨骼) and good eyesight.

它能给予我们强壮的骨骼和良好的视力。

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"Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of vitamin D deficiency in our population, not only in the U.S.,but worldwide" Vitamin D helps our bodies absorb calcium and helps form and maintain strong bones.

VOA: standard.2010.05.28

Strong and fast, they had good bones and a strong constitution for improving local horse stock.

ECONOMIST: Horses with wings

Our hollow, long bones are thick and strong where needed, and light and flexible where possible.

FORBES: Move up http://i.forbesimg.com t Move down

However, more important is that strong muscles maintain and produce stronger bones.

FORBES: Why Strength Training May Help You Live Longer