a street where the most important shops and businesses in a town are

There's a new Italian restaurant opening on the high street. 商业街上新开了一家意大利餐馆。

business done in shops

There are signs of economic recovery in the high street. 商业方面有经济复苏的迹象。

relating to business done in shops

There was a modest rise in high-street spending last month. 上个月购物支出略有增长。

High-street products, especially clothes, are intended for the ordinary public and not for rich people.

high-street fashions 价格适中的时装