投机 + 交易/Noun
投机 (tóujī) means "speculative," often used in financial contexts to describe risky trading or investment behavior motivated by short-term profit. It can also carry a negative connotation of opportunism.
投机行为会增加市场的风险。
tóujī xíngwéi huì zēngjiā shìchǎng de fēngxiǎn.
Speculative behavior increases market risk.
他靠投机炒房赚了不少钱。
tā kào tóujī chǎofáng zhuànle bù shǎo qián.
He made a lot of money through speculative property flipping.
政府出台政策打击投机交易。
zhèngfǔ chūtái zhèngcè dǎjī tóujī jiāoyì.
The government introduced policies to crack down on speculative trading.