It had been a difficult day but she managed to raise a smile.

尽管这一天很不顺利，但她还是努力露出笑容。

《牛津词典》

Sunday is a difficult day for Tom.

星期天是汤姆难过的日子。

youdao

Instead, she said, I heard Jamie was having a difficult day too.

而她开口说的是：我听说杰米今天也不大开心。

youdao

Mr.Ban told reporters today is a very "sad" and "difficult" day for the United Nations.

VOA: standard.2009.10.28

New Zealand's top scorer Jamie How tried to remain upbeat despite a difficult day for his side.

BBC: Anderson cool on 10-wicket chance

At the end of a difficult day, I applaud Kobe for coming forward and taking responsibility for his actions.

FORBES: Kobe Bryant Apologizes for Gay Slur After Twitter Explodes

Although it will be too late to avoid the tax, the banks are expecting a difficult day on Tuesday.

BBC: EU leaders gamble in Cyprus bank bailout