adj.双壳的；两瓣的
n.双壳贝；[无脊椎]双壳类动物
bivalved───双瓣的,双壳的
bivalves───n.[无脊椎]双壳类（bivalve的复数）
bivalvate───双壳类
trivalve───n.三瓣生物；三瓣贝壳；adj.三瓣的
univalve───adj.单壳的；单瓣的；n.单壳软体动物
bivane───n.双风向标
valve───n.阀；[解剖]瓣膜；真空管；活门；vt.装阀于；以活门调节；n.(Valve)人名；(俄、芬)瓦尔韦
air valve───[机]空气阀；通气管之活瓣
bivalence───n.二价（等于bivalency）
It was the largest bivalve I've ever seen, with a shell approximately the size and shape of my foot.───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。
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。
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？
MFK Fisher was right to note that the bivalve is a famous aphrodisiac thanks to its "odour its consistency and probably its strangeness" .───译者注。）认为牡蛎“独特的气味，粘稠，可能还有它奇异的外形”，让它成为一种闻名遐迩的催情药。
marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide.───有双壳的海生动物，有一对带有触须用于捕食的臂；世界各地均可见到。
Sponges, corals and brachiopods (a once-widespread group that look a bit like bivalve molluscs) were particularly badly hit.───海绵动物、珊瑚类和腕足类动物（一个曾经分布广泛的种群，看起来有点像双壳类软体动物）尤其惨遭重创。
to avoid sampling bias , they restricted their analysis to one group of animals ? the bivalve molluscs ? that fossilise well.───为了防止取样的偏颇，他们将分析的对象限制在一类化石记录保存完备动物？？双壳类软体动物。
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。
Any of various bivalve mollusks of the family Cardiidae, having rounded or heart-shaped shells with radiating ribs.───鸟蛤鸟蛤科双壳类软体动物，有放射状翅脉的圆的或心形外壳。