I'll say 'One, two, three, go!' as a signal for you to start.

我喊“一、二、三，开始！”作为你开始的信号。

《牛津词典》

youdao

It takes maybe one, two, three weeks to do that.

也许这需要花上一个，两个，三个星期。

youdao

The White House has one hundred thirty-two rooms, including sixteen family and guest rooms, thirty-five bathrooms and three kitchens.

VOA: special.2009.05.08

Oh, there's the downbeat but we were putting that on two One two three one two.

这里是重拍,但我们把它放在二上面,一,二,三,一,二

耶鲁公开课 - 聆听音乐课程节选

This is described as actually one of the top two or three acoustic concert halls in the whole world.

是不会坐到坏点位置,死角位置的，它被誉为是。

麻省理工公开课 - 化学原理课程节选

In Welsh nurseries, there should be one adult to three children under two years, one adult to four children aged two years and one adult to eight children aged three to seven years.

BBC: Nursery ratios raised 'to improve standards'

If there's one two or three or more that have questions to answer, then those questions will be asked and i will get answers.

BBC: Attwood expects Red Sky report in 3 weeks

So if you switch, your chance of winning goes up from one in three to two in three.

ECONOMIST: Getting the goat