hyperactivity

n.活动过度；极度活跃

Since Mr Sarkozy is known for his hyperactivity, nobody doubts that he will move fast. 既然萨尔科齐先生因极度活跃而众所周知，没有人怀疑他会很快有所动作。

Given the effects of cocaine on people, hyperactivity may seem like a fairly obvious reaction. 我们已经知道，人若是服用了可卡因，最明显的表现可能是极度活跃。