Carbon atoms provide the backbone of living matter.

碳原子提供了生活物质的主链。

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A polymer has a repeating structure, usually based on a carbon backbone.

聚合物具有一般是基于碳链的重复结构。

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Phospholipids contain a head group, choline in this case, that is attached the phosphate group to a three carbon glycerol backbone.

磷脂包含一个通过磷酸基附着在甘油的三碳骨架上的头部，这里是一个胆碱。

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Using Thinkid, Case changed the bike's backbone from an unwieldy 4-inch-wide aluminum tube to a seamless carbon fiber piece weighing 14 pounds.

FORBES: Easy Designer