Overdrive, 指汽车的超速档。

说一件事情into overdrive, 意思就是进入白热化。

"The candidates threw their campaigns into overdrive ahead of the election," 选举即将到来前，候选人的宣战纷纷进入白热化。

"The debate on health care reform is going into overdrive," 围绕医保改革进行的辩论日益进入白热化。

"The fundraising efforts have spun into overdrive," 集资活动进入白热化。

"The college football season kicked into overdrive this weekend," 大学足球赛季这个周末进入白热化。