http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）
英语
西班牙语
西班牙语
英语
在《PONS词典》中的词汇
在《PONS词典》中的词汇
单语范例（未经PONS编辑处理）
He preferred to reveal the existing consciousness and enrich it with new layers and strata hidden below the known ones.
en.wikipedia.org Apart from the "cacique", other strata included priests and warriors.
en.wikipedia.org As with many geologic periods, the strata that define the epoch's beginning and end are well identified, but the exact ages remain uncertain.
en.wikipedia.org While males usually hover among the higher shrub foliage between 3 and 9 m (1030 ft), females tend to forage at lower strata.
en.wikipedia.org It proposes that the social strata and the division of labor of the feudal period continued into the modern era.
en.wikipedia.org