Transcript:
Brazil hasn't seen protests on this scale for over 20 years.
Police in riot gear stood behind barriers to protect state buildings in Rio, where over 100,000 people joined the march.
Demonstrators marched through the streets of Brazil's biggest cities, to protest about the rising costs of public transport and the expense of staging the 2014 World Cup.
Vocabulary:
on this scale 根据这一标准,这样一个规模
riot gear 防暴装备
barriers n. 障碍;栅栏;
rising costs 不断上涨的成本
staging v. 筹划