It wasn't difficult to pick up people for casual sex, but it was difficult to form any sort of relationship with someone.随便找个人做爱并不难，但是要找个人建立某种关系却并不容易。I've only known you a few days Luke, and I don't go in for casual sex.我认识你才几天，卢克，我不会随便和人发生性关系。Lust now seems to be associated with casual sex and loose morals.色欲如今似乎与性生活随便和道德放纵联系在一起了。