trade
他以建筑为业。
He's a builder by ___trade.
他15岁离开学校去学一门手艺。
He left school at 15 to learn a ___trade.
木工是一门需要技能的手艺。
Carpentry is a skilled ___trade.
该国的经济严重依赖旅游业。
The country relies heavily on the ___trade in tourism.
他在餐饮业发家致富。
He made his fortune in the ___trade of catering.
政府正在投资以促进数字服务贸易。
The government is investing to boost the ___trade in digital services.