noun🔗Share坑，洼地，凹陷。 A pit, groove, cavity, or depression."The dentist pointed out a small fossa on my molar where a cavity was starting to form. "牙医指出我的臼齿上有一个小凹坑，那里已经开始形成龋齿了。anatomybiologypartChat with AIVocabulary GamePractice Reading
noun🔗Share壕沟，地堑. A long, narrow, shallow depression on the body of an extraterrestrial body, such as a planet or moon."The satellite images revealed a long, narrow fossa cutting across the smooth, icy surface of Europa. "卫星图像显示，一条狭长的壕沟横跨欧罗巴星光滑的冰面上，非常显眼。astronomygeologyspaceChat with AIVocabulary GamePractice Reading
noun🔗Share马岛獴，马岛长尾狸 A carnivorous mammal endemic to Madagascar, Cryptoprocta ferox."The zookeeper explained that the fossa, a unique predator from Madagascar, has retractable claws like a cat. "动物园管理员解释说，马岛獴（一种来自马达加斯加的独特掠食者），拥有像猫一样的伸缩自如的爪子。animalbiologynatureChat with AIVocabulary GamePractice Reading
