Protostratigraphy
原始地层学
🗣️ 情景例句
The organization was beautiful.
组织工作极佳。
Thank you for your inquiry, but we cannot make you an offer right now because we are presently unable to obtain appropriate materials.
谢谢贵方询价，但我们不能马上发盘，因为目前我们得不到合适的原料。
I learnt that I had passed the test.
我获悉我测验及格了。