黑市投机买卖

black market; speculative trading

他专门做投机买卖。

He does nothing but engage in speculation and profiteering.

在做房地产投机买卖中亏了本

Lost money in the real estate bubble.

他仰仗他父亲的势力搞投机买卖。

He relies on his father’s influence to engage in speculative business.

他在股票上做投机买卖致使他自杀。

His speculations in stocks led to his suicide.

全球人权危机论坛：性剥削、世界范围的性买卖、性旅游和卖淫

Форум по глобальному кризису прав человека: сексуальная эксплуатация, международная торговля услугами сексуального характера, секс-туризм и проституция