A severe, extended period of decline in business activity.

商业活动严重减少并且长时间没有好转。

youdao

And share prices did indeed suffer a long period of decline.

而之后的股价确实经历了一轮长期的下跌。

youdao

But it seems that the worst of the situation is now over and that the theatre, after a period of decline, is about to pick up again.

但看起来最糟的情况已经结束，萧条一段时间之后，剧院开始复兴。

youdao

Donohue says introducing new taxes now would further slow economic growth,or worse,bring about another period of decline.

VOA: standard.2010.01.12

Those levels would reach a plateau after some period of time, maybe after a couple of weeks and then they would begin to decline again.

在一段时间后,抗体浓度将达到峰值,峰值大约出现在几周之后,之后,抗体浓度将开始下降

耶鲁公开课 - 生物医学工程探索课程节选

"China,after having been one of the world's strongest and most developed countries, went through a period of relative decline and relatively being pushed around by other countries."

VOA: standard.2010.04.21

Such a man is well chosen to lead America into a period of decline.

FORBES: Peering Into the Abyss

The rise in employment figures followed a three-year period of decline in staff numbers, said the report.

BBC: Games industry employment increases in UK

Scotland's overall manufacturing output in October fell for the fourth month in a row, the longest continuous period of decline since the 2008-09 recession.

BBC: Scottish bank notes