Merestone
n. 界石,界碑
🗣️ 情景例句
This job is hard work.
这活儿太累人了。
I'd like to say goodbye to everyone.
我要向诸位告别了。
He can get up for about two hours each day, but you must keep the room warm.
他每天可以起来两个小时，但您必须保持房间温暖。