两三次的英文：
twice or twice

We played chess two or three times weekly.
我们每周下两三次棋。

Food was provided for penniless but hungry travelers at the two or three daily feed-ins
每天举行两三次施舍,为身无分文的饥饿行人供应食物。

Qin Zhong had already lost consciousness several times and been rifted on to a trestle-bed to die.
"此时秦钟已发过两三次昏了,移床易箦多时矣"

Even Mr. Fleagle stopped two or three times to hold back a small prim smile.
慢说弗利格尔师长教师也搁浅了两三次，好抑制他那一丝拘谨的微笑。

On two or three occasions, notably on October l7, 1914, the alarm was given that there was a U-boat inside the anchorage
曾有两三次，尤其是在1914年10月17日，警报传出，说在停泊所内发砚了一艘潜艇。

Once bitten, twice shy.
一朝被咬，加倍小心。

Once a man and twice a child
一次为成人,两度当小孩

She has a help in twice a week.
她雇了一个女佣,一周来做两次。

They had to fight with a force twice their numbers
他们必须与人数两倍于他们的军队作战。

It grows twice as fast as the second colony.
它增长的速率是第二个群体的两倍。