tripled
v.
（使）增至三倍( triple的过去式和过去分词 );
例句:
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Bitcoins have almost tripled in value in a month.
来自BBC
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I got a fantastic new job and my salary tripled.
我得到了一份非常好的新工作，薪水涨到了原来的3倍。
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The enemy tripled his strength.
敌军把兵力增加到原来的三倍.
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He tripled his income.
他使他的收入增加两倍[增至三倍].
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It may have tripled its efficiency since its invention.
来自SA
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'S education benefits, and enrollment more than tripled.
来自NEWYORKER