Ch□pter 3: Facing Challenges<□□2>
<□2>跨越时空的交错未来展望□□h□>历史背景In many cu□tures a□d societies, □ncest is consi□ered taboo and is strictly forbidden. □he□id□a o□ rom□n□i□□or sexua□ re□□tion□h□ps□between sibli□□s is □et with □hock, disgust, □nd □oral outrage□□□he tab□>