pill bug
noun [ C ] US uk/ˈpɪl ˌbʌɡ/ us/ˈpɪl ˌbʌɡ/ (US also sow bug); (UK woodlouse)
潮虫,球潮虫,鼠妇
a small, dark grey creature with a hard outer shell, found under stones or in slightly wet soil
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