创办自己的公司是一个巨大的冒险，但最终成功了。
Starting his own business was a huge ___gamble, but it eventually succeeded.
赌博可能上瘾。
___Gambling can be addictive.
她冒险投资股市，结果回报丰厚。
She took a ___gamble by investing in the stock market, and it paid off handsomely.
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