喝酒後， 隔幾耐先可以駕駛?

It doesn't have a fix time. It depends on how much you drank, what you drank (beer or wine?), and/or you drank non-alcoholic drinks or ate some thing after you drink alcohol. For example, you just drank a glass of beer and didn't drink or eat anything, you maybe able to drink after 30 to 45 minutes later. However, if you drank a lot, you may need several hours to clear the alcohol.