quickness

n.

急速，迅速地，尖锐化；

1. The third reason lies in its quickness.
   第三个原因在于它的迅速。
2. Runs the floor with fluidity, and good quickness.
   在场上奔跑非常谐调和迅速。
3. He is scared by the quickness of her perception.
   她敏锐的洞察力使他感到震惊。

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