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1·For example, sea stars prey on a variety of bivalve mollusks and prevent these bivalves from monopolizing habitats on the sea floor.

例如，海星捕食各种双壳类软体动物，防止这些双壳类动物独占海底的栖息地。

2·Somewhat heart-shaped sand-burrowing bivalve mollusks.

稍有心脏状掘沙的双壳类软体动物。

3·But did you ever notice anyone try to open the terrestrial bivalve with a typewriter?

但是，你可曾听说过有人试图用打字机来剖开陆生的壳类动物吗？

4·It was the largest bivalve I've ever seen, with a shell approximately the size and shape of my foot.

可以说它是我曾见过的最大的贝类了。贝壳的形状大小和我的脚差不多。

5·The discovery of bivalve fossil assemblages supplied the feature of bivalve fauna during the deposition of the Waigucun Formation.

该双壳化石组合的发现对歪古村组沉积时期双壳动物群的面貌是一个补充。

6·This paper presents basic operating principle and application of bivalve value window comparison switch and three state comparison switch.

本文介绍了双阀值窗口比较开关及三态比较开关的基本工作原理及应用。

7·There is a case of an oysterlike bivalve that evolved a more and more spiraled shell until, just before extinction, the valves could barely open.

这里有个例子，一种牡蛎状双壳贝，进化出越来越趋螺旋状的外壳，直到该物种灭绝前，其外壳已经几乎打不开了。

8·A Marine bivalve mollusk of the family Pholadidae, having a long shell with which it bores into wood, rock, and clay, often causing destruction of wharf pilings.

海笋，穿石贝海笋科中的一种海类甲壳软体动物，有长的甲壳，可以借之伸入到木头、岩石和泥土中，常引起对码头堆放物的破坏。

9·It has a bivalve shell, two strings which move the valves against one another, and a small pump that expels water (he is still working on the best design for the foot).

它具有双贝壳，分别由两根绳控制进行相对运动，还有用来排水的微型泵（他仍在寻找蛤足的最佳设计方案）。

10·The purification technique, combining bivalve and plant floating-bed, could not only get rid of suspended substance and algae, but also remove the nutrient effectively.

河蚌与植物集成净化技术既能够消除水体悬浮物、藻类，又可有效去除营养盐。

双壳类

1·Somewhat heart-shaped sand-burrowing bivalve mollusks.

稍有心脏状掘沙的双壳类软体动物。

双壳贝

1·There is a case of an oysterlike bivalve that evolved a more and more spiraled shell until, just before extinction, the valves could barely open.

这里有个例子，一种牡蛎状双壳贝，进化出越来越趋螺旋状的外壳，直到该物种灭绝前，其外壳已经几乎打不开了。