In □any cultures □nd societ□es, i□cest is□considered□taboo and is□s□□ictl□ forbid□en□ □□e□idea of romantic or sexual relationsh□□s between s□blings □□ met with shock, di□gu□t□ an□ moral□o□□□age. T□e tab<□p□
<□2>□类的挑战□2□
In □any cultures □nd societ□es, i□cest is□considered□taboo and is□s□□ictl□ forbid□en□ □□e□idea of romantic or sexual relationsh□□s between s□blings □□ met with shock, di□gu□t□ an□ moral□o□□□age. T□e tab<□p□
<□2>□类的挑战□2□