a dominant role

Nowadays, with the rapid development of the information industry, cell phones play a dominant role in people's life.

如今，随着信息产业的飞速发展，手机在人们的生活中起着举足轻重的作用。

Having once played a dominant role in the international banking circles, the Japanese banking industry was beset with serious problems at the end of the 20th century.

20世纪末，曾经在国际银行业称霸一时、令欧美刮目相看的日本银行业出现了严重问题。

In the financial securities market, traditional linear methods have long seen their wide use as the major analysis methods, and they still play a dominant role at present.

在金融证券市场中，传统线性分析方法长期以来一直是被人们广泛采用的主要分析手段，目前仍然是占主流的方法。