The American aerospace industry has been challenged by some stiff competition.

美国航空航天工业遭到了一些强劲竞争产品的挑战。

《柯林斯英汉双解大词典》

While their story has been challenged over and over again, nobody has been able to officially debunk it.

当他们的故事一次又一次的遭到质疑的时候，没人会公开的揭穿真相。

youdao

This view of production efficiency has been challenged by the rise of flexible manufacturing technologies.

这种生产效率的观点，已遭受到柔性制造技术兴起的挑战。

youdao

But SWAPO has been challenged by the emergence of a new party, the Rally for Democracy and Progress.

VOA: standard.2009.11.28

They are steps that are working." Bernanke says the Federal Reserve and other economic policy makers have been challenged by unprecedented events in the past few years, but his objective has not changed.

VOA: standard.2009.08.25

Whenever our Nation has been challenged, the American people have responded with faith, courage, and strength.

WHITEHOUSE: The White House

Cordray's appointment, made on the same date, has been challenged in a separate case.

NPR: Court Says Obama Appointments Violate Constitution

The licence that allows the Womad Festival to be staged has been challenged by Wiltshire Police.

BBC: Womad Festival licence challenged by Wiltshire Police