overdrive

名词 overdrive:

1. the state of high or excessive activity or productivity or concentration
2. a high gear used at high speeds to maintain the driving speed with less output power

动词 overdrive:

1. drive or work too hard
2. make use of too often or too extensively
   同义词：overuse

o.ver.drive

n.（名词）
A gearing mechanism of a motor vehicle engine that reduces the power output required to maintain driving speed in a specific range by lowering the gear ratio.
（汽车的）超速档：机动车辆的一种齿轮装置，通过降低齿轮比率来减少为将车速保持在一定范围内而需要的输出力
Informal A state of heightened activity or concentration:
【非正式用语】 高度活跃或注意力高度集中的状态：
例句：
shifted into overdrive toward the end of the semester.
把注意力都转移并集中到期末的学习中来

v.tr.（及物动词）
o.ver.drove[-drôv.] o.ver.driv.en[-drv.…n] o.ver.driv.ing,o.ver.drives[ô.v…r-drov.]
To drive (a vehicle) too far or too long.
驱使过度：驱使车辆过远或过久
To push (oneself) too far, as in the performance of tasks.
使（人）操劳过度：如在执行任务时，使（自己）过于疲劳