文字稿:

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 詞匯:

on this scale 如此大規(guī)模的

riot gear 防暴裝備

barriers 障礙

rising costs 上漲的費(fèi)用

staging 舉行