Dendrachy
[计] 树状分级
🗣️ 情景例句
Good luck.
祝你好运。
What are friends for?
朋友是做什么用的？
This increases their air-resistance and reduces the shock of impact when they hit the ground.
这样就加大了空气阻力，并减少了它们着地时冲击力带来的震动。