也许有些日子会走运，但星期五不会。

There's some lucky days, maybe, but Friday ain't.

youdao

有些日子他们没有任何争吵，可以在一起快乐地度过几个小时，但是有时候她们对于接下来做什么不能够达成一致意见。

Some days they could spend hours happily together without any argument, but other days they just could not agree on what to do.

youdao

有些日子，就连每天起床都会感到困难。

Some days it can be difficult to simply get out of bed in the morning.

youdao

- Now that's a slight lie-- or actually in these days of political debates, a slight misspeaking, a wonderful word-- -- it is technically correct. It is enough to allow us to write any program, but it's not enough to allow us to easily write any program.

现在还有点说谎的感觉,或者在这些强调政治辩论的日子中，可以说成是有些词不达意-,这是一个绝妙的形容词,在语义上是完全正确的，用这种语言我们可以编写任何程序,但是不能轻松地编写程序。

麻省理工公开课 - 计算机科学及编程导论课程节选

I've certainly worked a lot more than that on certain days.

有些日子工作时间比那个长多了。

电脑图片的魅力 - SpeakingMax英语口语达人