His hobby is freefall parachuting.

他的业余爱好是自由落体式跳伞。

《柯林斯英汉双解大词典》

NEWS: Penguin, Krill Populations in Freefall

新闻：企鹅和它的种群

youdao

There is no doubt that the Numbers are in freefall.

毫无疑问，狮子的数量直线下降。

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"Ben approached a financial system on the verge of collapse with calm and wisdom, with bold action and out-of-the-box thinking that has helped put the brakes on our economic freefall."

VOA: special.2009.08.28

When a record crowd gathered outside the U.S.Capitol on a crisp January morning in 2009, financial markets were in freefall, and the U.S.economy was shedding 600,000 jobs a month.

VOA: standard.2010.01.15

"I think all of those things have accounted for the fact that the freefall did not continue and the economy is leveling off and we hope, improving into the next year,".

VOA: standard.2010.01.15

Amid that backdrop you might think that the European stock market is in a total freefall.

FORBES: Connect

Another nerve-wracking way to play Asia is through the currencies, which have been in freefall, too.

FORBES: Here come the bottom-fishers

She says some investors are asking if their portfolios contain stocks that are in freefall.

NPR: Are Your Investments Safe?