speed up

加速する

以前より速く動いたり、作業したりすること。

やさしい英語で： If you do this, you move or work faster than before.

• The train began to speed up.
• We sped up when we saw the rain coming.
• Can you speed up a little?

類義語： accelerate, go faster

反対語： slow down

よく使う表現： speed up gradually, speed up again, speed up slightly

速める、加速させる

物の動きや物事の進み方を速くすること。

やさしい英語で： If you do this, you make something move or happen faster.

• This will speed up the work.
• They sped up production to meet demand.
• Can we speed the video up?

使い方： speed something up (The new equipment will speed the work up.)

類義語： accelerate, quicken

反対語： slow down

よく使う表現： speed something up, speed up production, speed up recovery