I did not have the foggiest idea what he meant.我根本不知道他是什么意思。I don't have the foggiest idea what the present is for.这个礼物是怎么回事我真是毫无头绪.'How often does it need to be changed?' — 'Haven't the foggiest...
These ocean fogs can last for days.这种海上大雾可持续数天。We get heavy fogs on the coast in winter.这里的海边冬季有浓雾.The complicated language fogs the real issues.复杂的语言把实质问题弄得模糊不清....