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 根據這一標準,這樣一個規模
riot gear 防暴裝備
barriers n. 障礙;柵欄;
rising costs 不斷上漲的成本
staging v. 籌劃