Merestone
n. 界石,界碑
🗣️ 情景例句
Don't get so excited about it.
别因为这事儿太激动。
Life is full of ups and downs.
人生沉浮多。
The plane was then able to rise and it cleared the mountains by 400 feet.
于是飞机可以上升了，它在离山头400英尺的高度飞越了过去。