Ulsterian
[地质]乌耳斯特阶
🗣️ 情景例句
Just fill out this form for me.
请把这份表填好。
I meet the boy whose aunt is a secretary.
我遇到那个男孩的姑妈是秘书。
I'm tired of working all day.
整日工作使我厌烦。