biggest one-day gain

基本解释

This was the biggest one-day gain since October.
这是自去年10 月以来单日最大涨幅。
The euro rose just over 1% against the dollar Friday, its biggest one-day gain since the start of the year, and is up 1.65% over the past week.
周五欧元对美元上涨了1%，这是今年开始以来最大的日增幅，总体来看欧元对美元比去年增长了1.65%。
That changed on Monday, as the VIX jumped 15% to 39.18, its biggest one-day gain since Jan. 20, which was the day of another brutal market selloff.
这种状况周一发生了变化，波动指数攀升15%，至39.18，为1月20日以来的最大单日涨幅，而那天正是股市另一个经历惨痛抛售的梦魇之日。

The stock market gave a resounding vote of confidence to the Geithner plan as stocks rallied by nearly seven percent, their biggest one-day gain since October.

The stock opened up 613% and closed up a mere 386% on the first day of trading, the fourth-biggest one-day gain for a new offering.
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