做投机买卖的人对亏损的风险得有所准备。

People who speculate have to be prepared to take the risk of losing money.

youdao

约翰·克莱门斯尽管受过做律师的训练，可还是要靠开店铺和做房地产的投机买卖来养家糊口。

John Clemens, though trained as a lawyer, tried to support his family by running a store and speculating in real estate.

youdao

她做证券投机买卖。

She speculate on the exchange.

youdao