Microbiostratigraphy
微体生物地层学
🗣️ 情景例句
I was very sad indeed to hear about it.
听了这件事，我的确非常难过。
That's really something.
真了不起。
It was warm last Sunday, so I went and sat on the river bank as usual.
上星期日天气很暖和。于是我和往常一样，又去河边坐着。