英语句子

桡骨是前臂里的一块长骨，在靠近大拇指的一侧。The radius is a long bone in your lower arm, on the same side as your thumb.

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尺骨是前臂里的一块长骨，与桡骨相邻。The ulna is a long bone in your lower arm, next to the radius.

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大多数人左右两侧各有十二对肋骨。Most people have twelve pairs of ribs on each side of the body.

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锁骨是一根细长的骨头，位于胸部上方、肋骨之上。The clavicle is a long, thin bone located at the top of the chest, right above the ribs.

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与股骨相连的肌肉能帮你的腿向前、向后和向侧边活动。Muscles attached to the femur help your leg move forward, backward, and to the side.

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指骨帮助手指弯曲，这样你才能抓住、写字或捡东西。The phalanges help your fingers bend so you can hold, write, or pick things up.

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每一根掌骨支撑着一根手指，当你抓东西或握东西时，掌骨能帮助手指活动。Each metacarpal supports one finger and helps it move when you pick up or hold things.

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每只手腕里有八块腕骨，它们紧密地拼合在一起。There are eight carpals in each wrist, and they fit closely together like a puzzle.

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尾骨（coccyx）是脊柱最末端的一块小骨头。The coccyx is the small bone at the very end of your spine.

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人有十二块胸椎骨，这部分是脊柱最长的一段。There are twelve thoracic vertebrae, and they form the longest section of your spine.

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软骨是一种光滑、有弹性的组织，分布在身体的许多部位。Cartilage is a smooth, rubbery tissue found in many parts of the body.

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脊柱是从背部中间延伸下来的骨骼结构。The spine is a line of bones that runs down the middle of your back.

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生殖系统是让人类可以拥有宝宝的一组身体器官。The reproductive system is the group of body parts that lets people have babies.

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脾脏是一个小而柔软的器官，位于身体左上侧、肋骨下方。The spleen is a small, soft organ located on the upper left side of the body, just below the ribs.

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肾上腺是体内长在每个肾脏上的小器官。The adrenal gland is a small organ that sits on top of each kidney inside the body.

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