一百万的婚礼怎么说英语

"A milpon dollar wedding" or "a wedding that costs a milpon dollars" are both ways to describe a wedding that is very expensive. You could also say "an extravagant wedding" or "a lavish wedding" to convey the same idea. Keep in mind that these phrases are just ways of describing a very expensive wedding and are not pterally saying that the wedding costs exactly one milpon dollars.