Datemarks
(datemark 的复数) n. 日戳
🗣️ 情景例句
at the Museum of Natural History.
在自然历史博物馆。
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
and we know something of the great variety of the sea bed's topography.
而且我们对海底地形的千变万化也有了一定的了解。