Unlike the day traders, they tended to hold on to stocks for days and weeks, sometimes even months.

和当日交易者不同，他们倾向于持股几天、几周有时甚至几个月。

《柯林斯英汉双解大词典》

I could go for two days, sometimes more, without seeing anyone-guys or friends.

我可以两天，某些时候在更长的时间里，一个人都不见——无论是朋友还是约会的对象。

youdao

These days,women who advertise online for husbands are sometimes called "e-mail-order brides."

VOA: special.2011.02.14

The airmen don't fly until they're needed. That means waiting, sometimes for hours or even days.

VOA: standard.2010.04.27

Sometimes for whole days he would just nurse their wounds.

NEWYORKER: Tenth of December

Often equipped only with head lamps and homemade maps, they explore the tunnels and ancient rooms, sometimes staying underground for days at a time.

CNN: Loving life in Paris' Empire of the Dead

Then they waited hours and hours, sometimes days, for news of their loved ones.

BBC: Basle air crash: The mothers who never came home