Quaternary (system)的用法和样例：
例句
- The Quaternary system in Hanjiang delta is formed by delta sedimentation which is mainly controlled by river trasportation.
韩江三角洲第四系是以河流搬运为主而形成的三角洲相沉积物。 - Previous research has concluded that biogenic gas of the Sanhu region is generated from Quaternary humic source rock.
在以前的研究中柴达木盆地三湖地区生物气一直被认为是完全由第四系腐殖型有机质所生成的。
