您要查找的是不是：
- Pleistocene stratum 更新统地层
- They represent each society stratum. 他们代表各个社会阶层。
- The Pleistocene Epoch or system of deposits. 更新世时期或更新世沉积物系统
- They do not constitute a separate class or stratum. 知识分子和青年学生并不是一个阶级或阶层。
- Discovery and study of the Early Pleistocene river and lake facies stratum in Bukedaban area of the western segment in the eastern Kunlun Mt. 东昆仑西段布喀达坂峰地区早更新世河湖相地层的发现及初步研究。
- It is middle Pleistocene in age. 年代地层单位属中更新统。
- He hates the privileged stratum. 他憎恨特权阶层。
- The most recent ice age was during the pleistocene. 最近的冰河期是在更新世。
- This is a stratum we must win over. 这一阶层，我们是必须争取的。
- Tramps are from the lowest stratum of society. 流浪汉来自社会最下层。
- By trench observations and dating of fault rocks and stratum samples, it is proved that the fault has dislocated the stratum of middle Pleistocene. 经系列探槽的开挖，断层构造岩及有关地层样品作绝对年龄测定，证明东岗断层错断了中更新世地层；
- Discovery of early Pleistocene strata containing plants fossils in the source area of the Yellow River and significance 黄河源区早更新世含植物化石地层的发现及意义
- Is The Intermediate Stratum Forming in China? 中国的中间阶层正在形成?
- Modification of breather stratum about airslide. 空气输送斜槽透气层的改造。
- To form bends in(a stratum of rock. 地层褶曲（在地层的岩石上）形成弯曲
- The lower stratum divides again into Ds and Es. 下层又分成D级和E级。
- Such inequalities are found in every stratum. 这类不公平的现象存在于社会的每一个阶层。
- To form bends in(a stratum of rock). 地层褶曲（在地层的岩石上）形成弯曲
- The zoology of Alaska; the zoology of the Pleistocene. 阿拉斯加动物区性；更新世系动物区系
- Stratum corneum means "horny layer". 角状的“层”组织即“角质层”。
