| 释义 |
step sth upphrasal verb(-pp-)to increase the level of an activity提高（活动）的水平◆he has stepped up his training to prepare for the race.他为准备那场比赛加强了训练。◆security has been stepped up in response to the recent terrorist threat.加强了安全措施以应对近来恐怖分子的威胁。 step sth up to increase the amount, speed, etc of sth 增加（数目、速度等）: ◇the army has decided to step up its security arrangements. 军队已决定加强保安措施。 |