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文字稿:

Their job is to keep passengers on the Sao Paulo underground safe.

But, once a month, instead of patrolling the platforms, nine security guards treat commuters to a concert.

They use the stations as venues and play an eclectic mix of samba, rock and opera.

The band is so successful that more members of staff want to take their place in the spotlight.

Vocabulary 詞匯:

passengers 乘客

patrolling 巡邏

commuters 通勤者，每天乘公交往返者

an eclectic mix 各種各樣的混合

in the spotlight 出風(fēng)頭；（成為）公眾注目的焦點(diǎn)