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n.四；四个一组
adj.[数]四进制的；四个一组的
1、quaternate───adj.由四个组成的；四个一组的
2、quaternaries───adj.[数]四进制的；四个一组的；n.四；四个一组
3、ternary───adj.[数]三元的，三重的；[数]三进制的；第三的
4、quatercentenary───n.四百周年纪念；adj.四百周年（纪念）的
5、Quaternary───adj.第四纪（岩石）的；n.第四纪
6、quaestionary───质量的
7、catenary───n.链；悬链线；链状物；adj.悬链线的；垂曲线的
8、quaternion───n.四元数；四个一组；四人一组
9、quaternity───n.四位一体；四人一组；四个一组
1、The Quaternary glaciation started just a few million years ago – and is still going on.───第四纪始于几百万年以前，并延续到现在。
2、Forests in the Yellow River region have already decreased a great deal in Quaternary age, and the Loess Plateau began to be formed.───在黄河流域，第四纪时森林已大量减少，黄土高原已开始形成。
3、Polymerizable quaternary ammonium surfactants are easy to modify the materials through the polymerization reactions.───因其具有可聚HeShuang键结构，使其易于通过聚合反应对材料进行修饰。
4、The upper boundary of the model is phreatic surface, the bottom boundary is the base of the Quaternary.───模型的上边界为潜水自由表面，下边界为第四系底界；
5、We know little of a quaternary compound.───我们对四元化合物了解得很少。
6、Around the world, a variety of climatic proxies demonstrate late Quaternary climate instability in a wide range of global significance.───世界各地多种代用指标显示晚第四纪气候不稳定性影响广泛，具有全球意义。
7、Quaternary structure The pattern in which two or more polypeptide chains are linked together to form a protein molecule.───由两条或更多的多肽链结合在一起形成的蛋白质的分子结构。
8、the Quaternary Period in which human beings began to appear on the earth went into Ice Age again, it was the last time.───在人类出现在地球上的第四纪再一次进入了冰河期，也就是最后一次。
9、Review and prospects of Quaternary Glaciation research in China.───中国第四纪冰川研究的回顾与展望。