Quadtrees
四元树
🗣️ 情景例句
I give thanks for being here with my family and for being well,
我感谢能在这里和家人在一起而且很健康，
Don't you think you've eaten enough?
你不是吃的很多了吗？
Later, we ate our picnic under some trees.
后来，我们在树下吃野餐。