In my career I went through bad periods, both family wise and in football because of injuries.

在自己的生命中曾经历过糟糕的日子，无论是在家庭方面还是足球。

youdao

Traffic congestion is really bad at peak periods.

交通拥挤状况在高峰时段真是糟糕透了。

youdao

Since it's controlled by the weather, it will be a matter of luck whether the bad air periods correspond with days of outdoor Olympic events.

自从污染物被天气控制以后问题的关键就是劣质空气的周期是否与户外奥运会项目的那几天相一致。

youdao

If what Wall Street says is true, then the SPIVA Scorecard would have clearly showed that active managers missed the bad periods over the past decade.

FORBES: SPIVA Spikes Mutual Fund Managers Again

In some ways, the seven years of his presidency have been among the least bad periods in Russia's history, which helps to explain his popularity but so does his neutering of the media, strangulation of political opposition and suborning of parliament and elections.

ECONOMIST: The West and Russia

Because growth forecasts become relatively so much more important to stock investors during bubbles, companies have their greatest incentive to spin news positively and challenge bad news during periods of stock market euphoria.

FORBES: Magazine Article