楼主， 这个没有英文直译的， 我就写几个意思相近的给你吧
1. I feel complicated.
2. I'm mixed with emotions.
3. I'm troubled by (something).
4. A feeling mixed with confusion and complication fills my heart.
嗯， 大概就这几个了。
最长最复杂的英语单词
据疯狂英语2001，九月，第30期载：
最长的是1，913个字母，
是“色氨酸合成酶A蛋白质”
（一种含有267种氨基酸酶）的全称----
一般的字典上是见不着的。
可以翻翻医学专用词汇字典^_*
单词如下：
Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalany
lglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenyla
lanylvalylprolyphenylalanYlvalythreonylleucylglycylaspartylprolylglyc
ylisoleucylglutamylglutaminylsErylleucyllysylisoleucylaspartylthreony
lleucylIsoleucylglutamylalanylglycylalanylasparthlalanylleucylglutamy
lleucylglycylisoleucylprolylphenylalanylseRylaspartylprolylleucylalan
ylaspartylglycylpRolylthreOnylisoleucylglutaminylasPfraginylalanylthr
eonylleucylarfinylalanylphenylalanylalanylalanylglycylvalythreonylpro
lylalanylglutaminylcysteinylphenylalanylglutamylmethionylleucylalanyl
leuOylisoleucylarginylglutaminyllysyhistidylprolylthreonylisoleucylpr
olylisoleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalyl
phenylalanylasparaginyllysyglycylisoleucylaspartylglutamylphenylalany
lthrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylasparty
lserylvalylleucylvalylalnylaspartylvalylprolylvalylglUtaminylglutamyl
serylalanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginy
lhistidylasparaginyvalylalanylprolylisoleucylprolylisoleucylphenylalan
ylisoleucylphenylalanylisoleucylcysteinylprolylprolylaspartylalanylasp
artylaspartylaspartylleucylleucylarginylglutaminylisoleucylalanylseryl
tyrosylglycylarginylglycyltyrosylthreonyltyrOsylleucylleucylserylargin
ylalanylglycylvalylthreonylglycylalanylglutamYlasparainylarginylalanyl
alanylleucylprolylleucylasparaginylhistidylleucylValylalanyllysylleucy
llysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucylglutaminy
lglgycylphenylalanylglycylisoleucylserylalanylprolylaspartylglutaminylv
