Look at those beautiful sea shells someone arranged on the sand! 看!有人在沙滩上摆了这些美丽的贝壳。
N-COUNT. 软体动物. A mollusc is an animal such as a snail, clam, or octopus which has a soft body. Many types of mollusc have hard shells to protect them. (蛋、坚果等的)壳. The shell of a nut or egg is the hard covering which surrounds it.