Ceratites
(ceratite 的复数) [古生]齿菊石
🗣️ 情景例句
Please keep off the grass.
请勿践踏草地。
I know the boy whose father is a banker.
我知道那个男孩的父亲是银行家。
Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.
前些年，美国一位精神病学者发表了一篇报告，报告中记录了眼球在睡眠时的活动情况。