Stratigraphies
(stratigraphy 的复数) n. 地层学, 地层情况\\n[医] 体层X线照相术, 断层X线照相术
🗣️ 情景例句
to serve the senior citizens
为Riverdale的老年人
While Mike was an only child, he would amuse himself with his toys.
麦克还在孩提时，常常独自玩玩具取乐。
It involves a lot of hard work.
那需要很多的辛勤工作。