noun🔗Share地层，层。 One of several parallel horizontal layers of material arranged one on top of another."The geologist pointed to a distinct dark stratum in the rock formation, indicating a layer of volcanic ash deposited long ago. "地质学家指着岩层中一个明显的深色地层，指出那是很久以前沉积下来的一层火山灰。geologymaterialstructureChat with AIVocabulary GamePractice Reading
noun🔗Share地层，岩层 A layer of sedimentary rock having approximately the same composition throughout."The geologist pointed to a thick, reddish-brown stratum in the cliff face, explaining that it was formed by ancient desert sands. "地质学家指着悬崖上厚厚的、红褐色的岩层，解释说它是由古代沙漠沙子形成的。geologyChat with AIVocabulary GamePractice Reading
noun🔗Share大气层，层。 Any of the regions of the atmosphere, such as the stratosphere, that occur as layers."The atmosphere has different strata, each with its own temperature and air pressure. "大气层分为不同的层次，每一层都有自己的温度和气压。environmentareageographygeologyspaceastronomyweatherChat with AIVocabulary GamePractice Reading
noun🔗Share层，组织层，地层 A layer of tissue."The burn affected only the top stratum of her skin, so it was a first-degree burn. "烧伤只影响了她皮肤的表层组织，所以只是一度烧伤。anatomybiologyChat with AIVocabulary GamePractice Reading
noun🔗Share阶层，社会阶层。 A class of society composed of people with similar social, cultural, or economic status."In many countries, access to quality education is often determined by which stratum of society a family belongs to. "在很多国家，能否获得优质教育往往取决于一个家庭属于哪个社会阶层。societygrouphumanChat with AIVocabulary GamePractice Reading
noun🔗Share层次，植被层。 A layer of vegetation, usually of similar height."The forest floor had a stratum of low-lying wildflowers. "森林地面上有一层低矮的野花植被。environmentnaturebiologyplantecologyChat with AIVocabulary GamePractice Reading
noun🔗Share层级，阶层 The level of accuracy of a computer's clock, relative to others on the network."The stratum of the server's clock was crucial for synchronizing the team's shared project files. "服务器时钟的层级对于同步团队共享的项目文件至关重要。computingtechnologyinternetsystemtimeChat with AIVocabulary GamePractice Reading
