English Dictionary

speed up

verb

(idiomatic, intransitive) To accelerate; to increase speed. / (transitive) To increase the speed of something; to make something go faster.

I need to speed up my work if I want to finish on time.

意味（1）

(idiomatic, intransitive) To accelerate; to increase speed.

The car sped up as it went around the corner.

意味（2）

(transitive) To increase the speed of something; to make something go faster.

You shouldn't speed up your car when you go around corners.