Eucnemesaurus这个词语来源于希腊语，意为“好膝盖的蜥蜴”。它是一种已灭绝的中生代类群，属于蜥脚类恐龙。
例句：
1. Eucnemesaurus是一种大型草食性恐龙，生活在大约1.6亿年前的阿根廷。（英文：Eucnemesaurus was a large herbivorous dinosaur that lived in Argentina about 160 million years ago.）
2. 这座博物馆里展出了一只完整的Eucnemesaurus的骨架。（英文：This museum displays a complete skeleton of Eucnemesaurus.）
3. Eucnemesaurus是一种蜥脚类恐龙，有着很长的腿和颈部。（英文：Eucnemesaurus is a type of sauropod dinosaur with long legs and neck.）
4. Eucnemesaurus的化石是了解古生物学的重要资料之一。（英文：Eucnemesaurus fossils are an important source of information for paleontology.）
5. Eucnemesaurus的头部很小，相对于身体来说非常不成比例。（英文：Eucnemesaurus had a small head that was disproportionately small compared to its body.）
6. Eucnemesaurus的尾巴几乎占了它整个身体长度的一半。（英文：Eucnemesaurus' tail was almost half the length of its body.）
7. Eucnemesaurus属于晚侏罗世的恐龙，生存时间相当早。（英文：Eucnemesaurus lived during the Late Jurassic Period, making it relatively early in dinosaur history.）
8. Eucnemesaurus是一种奇特的蜥脚类恐龙，可以上下抬动前腿。（英文：Eucnemesaurus was an unusual sauropod dinosaur that could raise and lower its front legs.）
9. Eucnemesaurus的牙齿呈锥形，适合于咀嚼植物的纤维。（英文：Eucnemesaurus had conical teeth that were adapted for chewing plant fibers.）
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