quaternary
adj. [数] 四进制的；四个一组的
n. 四；四个一组
复数 quaternaries
例句
We know little of a quaternary compound.
我们对四元化合物了解得很少。
Review and prospects of Quaternary Glaciation research in China.
中国第四纪冰川研究的回顾与展望。
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。
