The outer shell of the sphere is heat dissipating, allowing it to penetrate shields, and is built of a shock absorbing material.
用减震材料制成的球体外壳能散热，使蜂鸣机器人可以穿透护盾。
The spongy material found under your foot in many running shoes. A shock-absorbing material that's lighter than polyurethane(see PU).
在很多跑鞋中，都能在你的脚下找到的海绵状材料。是一种比聚氨酯（参见PU）轻的吸收震动的材料。
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