Derivative prices leapt on new york 's trading floors .

衍生物的价格在纽约交易大厅跳升。

The total wealth of the world 's millionaires leapt 18.9 % to $ 39 trillion .

全世界百万富翁拥有的总财富骤增了18.9%，达到39万亿美元。

Since 2001 , while the number of papers published in research journals has risen 44 % , the number retracted has leapt more than 15-fold , data compiled for the wall street journal by thomson reuters reveal .

汤森路透（thomsonreuters）为《华尔街日报》编辑的数据资料显示，自2001年以来，在科研期刊上刊登的论文数量增加了44%，而被撤销的论文却剧增超过15倍。

Something leapt into the path .

有什么东西跳到了路当中。

Your correspondent experienced a moment of terror when a hippo leapt off the bank and over the prow of the canoe in front .

笔者经历过这种恐怖的阵仗：一头河马从河岸上跳下来，冲着独木舟船头游了过来。