贝壳

The transparent shells of tiny Cypridina hilgendorfii, found in the coastal waters and sands of Japan, hold a creature that emits a luminous blue substance when disturbed.

很小的透明的贝壳，在日本的沙滩和水域海岸被发现，当受到干扰时这生物会放射出蓝色的光亮。

To use rigorous concept of shelly ridge, the deltaic lobe change could be precisely subdivided when event deposits have been excluded.

严格使用沿岸堤的贝壳堤概念，可进一步划分三角洲叶瓣变迁，但是事件堆积必须剔除。

Any of various small marine clams of the genus Donax that are common in the coastal waters of the eastern and southern United States and have variously colored, often striped or banded shells.

斧蛤任一种斧蛤属海生小蛤蜊，在美国东部及南部沿岸的海域中很普遍，有五彩斑斓的条纹或带纹状贝壳

Xiamen Grand Engler agate handicraft factory located in the city - Xiamen Haicang, is a design, production, processing and marketing into one entity of private manufacturers, professional production of various kinds of agate, shell handicrafts, factory adopted from Brazil and Uruguay imports of natural agate stone, agate production and processing products, diverse varieties.

厦门爵恩氏工艺品厂坐落于玛瑙之都--厦门海沧，是一家以设计、生产、加工、销售为一体实体性民营厂家，专业生产各类玛瑙、贝壳工艺品，本厂采用来自巴西及乌拉圭进口的天然玛瑙石，生产加工玛瑙制品，花样繁多，品种齐全。

That's a fanlike shell.

那是扇状的贝壳。

The sand dunes analyses data have shown they mainly consist of well sorted, symmetry skewness and find sands, and the kurtosis peak is narrow or very narrow. There are abundant impacts of mechanic process on the surface of quartz grains. The traces of eolian process often superpose on the traces stamped by river and beach processes. The dish--shaped concavities and mechanic pits are the most common surface textures, but the barchan concavities and curved grain edges are indicated the marks by eolian environment. The heavy minerals assemblages of coastal dunes are dominated by relatively high specific gravity which have stable chemical properity suggesting the mordern high dynamic environments of coast area. The depositional structures of coastal dunes are typified by corss--bed sets composed of steep foreset laminates and gentle windward dipping sets. It also contains some shell fragments and strong worn foraminiferal tests that are impossibly found in inland desert. On the other hand, the sandy deposits of the continental shelf of East China Sea are with wide range of grains, and the depositional pattens are quite complicated.

海岸沙丘是晚全新世以来相对稳定的海平面背景下的海岸带风成堆积，其沉积特征是以细沙为主，分选好，搬运方式以跃移占绝对优势，偏度上近对称，峰态窄到很窄；石英颗粒表面机械作用形态丰富，风成作用形态叠加于河流和海滩过程形态之上，碟形坑和撞击麻点是最为常见的表面形态，而新月形坑和曲脊是其指示性的特征标志；沙丘沙重矿物以化学性质稳定、比重较大的种类为主，反映了海岸带目前的高能动力环境；海岸沙丘沙的沉积构造以高角度前积层和低角度顶积层组成的交错层理为典型特征，同时还含有少量内陆沙漠所没有的少量贝壳碎屑和强烈磨损的有孔虫壳体。

The inner margin of the opening of a gastropod shell .

由一个或两个人推动两个船桨的贝壳状赛艇。

Gastropod shell with the apex upward has its opening on the right when facing the observer; a ''.

顶点向上的右旋腹足贝壳在面对观察者时向右打开；''。

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足动物海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。