大家都搜：
三叶虫
1、trilobite picture───三叶虫图片
2、trilobite anatomy───三叶虫解剖学
3、viburnum trilobum───三尖荚荚；
4、trilobite ark───三叶虫方舟
5、trilobite fossils───三叶虫化石
6、trilobite fossil images───三叶虫化石图像
7、twinborn trilogy───孪生三部曲
8、gastriloquist───胃泌素
9、asaphus trilobite───三叶虫
10、trilocular───adj.[生物]三室的
1、Sponges , jellyfish and corals were joined by bony fish, scorpions and trilobites.───有骨的鱼、蝎子和三叶虫，混迹于海绵、水母和珊瑚。
2、The Kaili formation in Eastern Guizhou, China is mainly made up of silty mudstone and shales abundant in trilobites.───贵州黔东地区中-下寒武统凯里组主要由粉砂质泥岩、页岩及灰岩组成，富产三叶虫。
3、Yet if that is the right interpretation, it leaves the question of what evolved into the trilobites and their kind as mysterious as ever.───不过倘若这样的解释是正确的，三叶虫和它的同类由何而来的问题将仍然神秘晦涩，一如往昔。
4、Tadpole shrimp have outlived dinosaurs, trilobites and mammoths.───鲎虫比恐龙、三叶虫、猛犸象更长寿。
5、The earth's oceans were once filled with horse shoe crab-like critters called trilobites.───地球上的大洋曾经到处都是类似于马蹄蟹的生物-三叶虫。
6、For example, Peter Sheldon' s studies of trilobites, a now extinct marine animal with a segmented body, offer a detailed glimpse into three million years of evolution in one marine environment.───例如，彼得·谢尔登对于三叶虫的研究，那是一种已灭绝的身体分节的海洋生物，他的研究让我们得以一窥三百万年以来一个海洋环境的进化过程。
7、Who's to say that our ideas won't vanish long before the trilobites did?───谁说我们的思想不会在三叶草灭绝前很久就消失呢？
8、Tadpole shrimp have outlived dinosaurs, trilobites and mammoths.───蝌蚪虾比恐龙，三叶虫，猛犸象活得还长。
9、Trilobites are an extinct group of sea-dwelling arthropods that are distantly related to crabs, scorpions and beetles.───三叶虫是一种早已灭绝的海生节肢动物，是螃蟹、蝎子与甲壳虫等动物的远亲。
1、Trinucleid trilobites are blind, and with a greatly inflated mid-part of the head region.
2、The eyes of trilobites include some very sophisticated structures that show they were far from primitive visually.
3、As the trilobites spread through the seas of the world, they diversified into a great number of species.
4、The differences among the trilobites of different ages can be used by paleontologists to date these rocks.
5、Trilobites were the first creatures on earth to develop high-definition eyes.
6、This is one of the most primitive trilobites known.
7、Trinucleid trilobites, with various types of fringe, are characteristic of Ordovician rocks.
8、Some trilobites lost their eyes, probably those that burrowed in mud or lived in lightless parts of the ocean.
9、The trilobites produced the mosaic eye which has been retained by the insects.