Chronostratigraphy
年代地层学
🗣️ 情景例句
Marriage is an institution not to be taken lightly.
婚姻是个不能儿戏的体系。
It won't fit; you'll have to go to the post office.
那不行，你必须去邮局才行。
My name is Chen Sung-lim.
我叫陈松林。