第三人称复数：quaternaries
名词四，四个一组
形容词第四组中的组成部分，四进制的
1. 四级的;四元的;季：quassin 苦木素 | quaternary 四级的;四元的;季 | quinacrine 喹吖因
2. 第四纪第四系：quaternary system 四元系统 | Quaternary 第四纪第四系 | quaternion 四个一组;四人一组;四元数;四元法
3. 第四期：quasi viscous flow 半粘性怜 | quaternary 第四期 | quaternary diagram 四元系状态图
1. The Quaternary Period marked the beginning of the evolution of human beings.
2. He said the discovery would provide important data for research on Quaternary glaciers as well as the geography and climate changes in western China.
3. Wrangel was not glaciated during the Quaternary Ice Age resulting in exceptionally high levels of biodiversity for this region.
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4. Features of glaciation during the Quaternary Period make Lushan even more mysterious.
5. Scholars usually think that in the Holocene Quaternary period, the basic physical features of human skull did not have much change.
noun
1. the cardinal number that is the sum of three and one
Synonym: four 4 IV tetrad quatern quaternion quaternity quartet quadruplet foursome Little Joe
adj
1. quaternary什么意思
1. coming next after the third and just before the fifth in position or time or degree or magnitude
e.g. the quaternary period of geologic time extends from the end of the tertiary period to the present
2. consisting of or especially arranged in sets of four
e.g. quaternate leaves
a quaternary compound
Synonym: quaternate