The requirement on speed actuation is refined by the possible selection for speed: slow, medium, or fast.

快速启动的需求由可能的速度选择细化：慢速、中等或快速。

youdao

But in practice there are slow, medium, and fast boils.

实际操作起来有慢火煮沸，中火煮沸和大火煮沸之分。

youdao

If I want to race a man and my mind is the fast horse, my heart is the medium horse and my body is the slow horse.

如果我要同男人较量，我的头脑便是快马，我的心性便是中马，我的身体就是驽马。

youdao

The site also provides three options for walking speed slow (two miles per hour), medium (3 mph) and fast (4 mph).

WSJ: Timing an Urban Stroll Isn't a Walk in the Park