to happen or move faster, or to make something happen or move faster

This drug may have the effect of speeding up your heart rate. 这种药可能会使你心率加速。

Can the job be speeded up in some way? 这项工作能不能有什么办法加快速度呢？

The tape speeded up towards the end. 这盘磁带在接近结尾时速度突然加快了。

I think you need to speed up a bit (= drive faster) - we're going to be late. 我觉得你得开快点——我们要迟到了。

The economy shows signs of speeding up (= increasing activity). 经济呈现出加速增长的势头。