[<< wikibooks] Pinyin/Bone
Bones are parts of the human or animal skeleton of vertebrates. They are stiff organs which make up the endoskeleton. Our body is made of flesh and blood built on a framework of bones. Without our bones, we could not stand up or move about. They also protect organs inside our body. The skull protects the brain and the ribs protect the heart and lungs. The teeth support the facial muscles and help us smile. The number of bones in a human's neck is the same as a giraffe's.
Gǔtou shì rén huò jǐzhuīdòngwù gǔgé de bùfèn, shì zǔchéng gǔjià de jiānyìng qìguān. Réntǐ jiànlì zài gǔjià shàng, méiyǒu gǔtou jiù bùnéng zhànlì huò zǒudòng. Gǔtou yě bǎohù réntǐ nèi de qìguān. Tóugǔ bǎohù nǎobù, lèigǔ bǎohù xīnzàng hé fèibù. Yáchǐ zhīchí miànbù jīròu, bāngzhù xiàoróng. Réntǐ jǐngbù de gǔtou shùliàng yǔ chángjǐnglù xiāngtóng.