贝壳:shell 举例for example: 小贝壳常被用作简单的货币。 small seashells were often used as a primitive kind of money. 小女孩把贝壳穿成一串,戴在脖子上。 the little girl threaded the shells together and wore them round her neck. 潮水退去,我们就能寻找贝壳了。 as the tide receded we were able to look for shells.