clam shell

They found that the clam first contracts its shell.

他们发现蛏子首先会收缩自己的外壳。

TO Pry the Clam Shell of Money Market Funds

撬开货币市场基金的蚌壳

You are a boat, an island, a clam shell.

你是一只船, 一座小岛, 一瓣蚌壳.

The rest of the clam followed by moving quickly up and down and rapidly opening and closing its shell.

蛤蚌留在沙子外面的身体部分接着开始上下移动，并且迅速的开合它的贝壳。

A clam swam to the bank and opened its shell in the sun.

一只蚌游到岸上,然后在太阳底下打开了它的壳.

National Taiwan Ocean University professor Ho Ping-ho says the crab resembles the species living in the areas around Hawaii, Polynesia and Mauritius. But it has a distinctive clam-shaped shell about 1 inch ( 2.5 centimeters) wide, making it distinct.

台湾海洋大学教授何平合说，和这种螃蟹类似的物种都生活在夏威夷、波利尼西亚群岛和毛里求斯附近海域，但是台湾南岸的这种物种背壳只有1英寸（2.5厘米）宽，看上去和其他物种截然不同。