Quadtrees
四元树
🗣️ 情景例句
Yes.
是的。
Beauty, unaccompanied by virtue, is as a flower without perfume.
美而无德犹如花之无香。
Like his father, he was driving a car called Bluebird.
同他父亲一样，他也驾驶着一辆名叫“蓝鸟”的汽车。