culture shock
noun [ C or U ] uk/ˈkʌl.tʃə ˌʃɒk/ us/ˈkʌl.tʃɚ ˌʃɑːk/
文化冲击，文化震惊，文化休克（指去异国或异地时产生的困惑感）
a feeling of confusion felt by someone visiting a country or place that they do not know
It was a real culture shock to find herself in Bangkok after living on a small island. 在一座小岛上生活过后，回到曼谷使她感受到不小的文化冲击。