"How to say 'fast' in English?"
The word "fast" can be used to describe speed, as in "a fast car." It can also be used to describe someone who is quick or agile, as in "he is a fast runner." Additionally, it can be used in phrases like "fast-forward," which refers to moving quickly through a video or audio recording. If you are asking about the length of time something takes, you might use the phrase "fast" to describe how long it takes, as in "this task takes a fast amount of time."
