invertebrate having a soft unsegmented body usually enclosed in a shell
发音
例句
1. I swear I have never seen such a mollusk with thorns all over its body. 我敢发誓我从来没有见过这种全身长满棘刺的软体动物。 2. The colour varies with the mollusk and its environment. 颜色因母体及其环境的不同而异。