Cretaceous System的用法和樣例：
例句
- The main types of clastic sandstones are feldspathic litharenite and lithic arkose in the Cretaceous of the Songliao basin.
松遼盆地白堊系砂巖以長(cháng)石巖屑砂巖和巖屑長(cháng)石砂巖為特征。 - Apatite fission track data suggest that the early Cretaceous strata in the Liupanshan basin were subjected to two burial heating events.
磷灰石裂變徑跡研究表明，六盤(pán)山盆地白堊系地層經(jīng)歷兩次埋深加熱事件。
