Merestone
n. 界石,界碑
🗣️ 情景例句
I must prepare my lessons.
我必须准备工课。
Certainly.
当然了。
He started to complain about this wicked world but was interrupted by a knock at the door.
他开始抱怨起这个邪恶的世道来，却被一阵敲门声打断了。