我访问过东京两次了。

I have visited Tokyo twice.

youdao

我还以为她一次都赢不了，更别说两次了！

I never thought she'd win once, never mind twice!

《牛津词典》

我已经问过他两次了，他还没有给我答复。

I have already asked him twice but he hasn't given me reply.

youdao

OK. In the length of time it takes for the light to get from that bulb to the table, this machine processes two operations.

好，在灯光从灯泡到,桌子的这段时间内，电脑已经进行了两次运算了。

麻省理工公开课 - 计算机科学及编程导论课程节选

And he was sold for $1000.00 to an Alabama cotton planter who came up to Richmond twice a year to buy slaves.

他被以一千美元的价格卖给了一个每年两次,来里士满收购奴隶的亚拉巴马棉花种植主

耶鲁公开课 - 美国内战与重建课程节选

A gig is 10 to the 9, so it does two operations in the length of time it takes light to get from one foot off the table down to the table. That's amazing.

因此光行进一英尺的,时间内电脑可以,进行两次基本运算,这太神奇了。

麻省理工公开课 - 计算机科学及编程导论课程节选