相沿成习

相的英语翻译：

each other; mutually; appearance; looks; look at and appraise; photograph
posture
【化】 phase
【医】 phase

沿的英语翻译：

along; edge; follow; trim

成的英语翻译：

become; fully grown; succeed

习的英语翻译：

be used to; custom; habit; practise