tā / zài / qī huò / jiāo yì suǒ / dāng / hóng mǎ jiǎ / fù zé / chuán dì / jiāo yì / zhǐ lìng

他在期货交易所当红马甲，负责传递交易指令。

He works as a floor trader at the futures exchange, responsible for transmitting trading orders.