"Sebuah gaun putih adalah untuk pernikahan."
Terjemahan:A white dress is for marriage.
This is a really bad sentence in English.
Firstly, you would say 'wedding', and not 'marriage', because the dress is only used for the wedding, not the whole marriage.
Secondly you wouldn't say 'A white dress is for marriage', but maybe 'White dresses are for weddings' or 'A white dress for A wedding'.
Just really bad