1·Although most people around the world believe that UFO sightings are nothing more than the product of overactive imaginations.
虽然世界上大部分人认为目击ufo只不过是过于活跃的想象力的结果。
2·A few years later, another mutation was found in LRP5 that produced the opposite effect, extremely dense bones and resistance to osteoporosis. In this case, LRP5 was overactive.
几年后，LRP5基因的另一个变异被发现能相反的作用，即骨密度异常高和抵抗骨质疏松，在这种情况下，LRP5基因过于活跃。
3·'He's got an overactive imagination.'
他有一个过于活跃的想象力。