Specifying a sizable number of initial agents, while not necessary, can accelerate the warming-up period.

指定初始代理程序数目要合适(尽管并非必要条件)，这可以缩短“热身”时间。

On physical education and extra-curricular activities to prepare before the warming-up, attention should be paid to exercise when not to dramatic collision, so as not to be knocked down or fall.

上体育课和课外活动前要作好准备活动，运动时要注意不要剧烈碰撞，以免撞伤或摔伤。

In an hour the drivers will be warming up for the main event.

一小时后车手们要为主赛做热身运动。

While warming up for his heat Monday morning, Liu went down to his knees and bowed his head.

周一上午在做赛前准备活动时刘翔膝盖着地低下了头。

School children were warming up for a swimming lesson and I smiled as they exercised with their little faces all screwed up in concentration.

小学生们正在为游泳课做准备活动，看到他们的小脸上满是专注的表情时，我笑了。