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.
她做证券投机买卖。
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.
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