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》

He has downloaded seven news apps, through which he reads for one or two hours a day.

他下载了七个新闻的应用程序，每天通过这些程序阅读一到两个小时。

youdao

A person needs two mono fins, one for each foot.

一个人需要两个单鳍，每只脚一个。

youdao

Students are generally advised to budget around one to two thousand dollars for expenses for a school year in the United States.

VOA: special.2009.05.28

How many people vote for that this is a reversible process? I've got one vote back there two votes, three votes, four votes. Anybody else?

有多少人认为,这是一个可逆过程？有一个，两个，三个,四个，还有别的人吗？

麻省理工公开课 - 热力学与动力学课程节选

so you can see that there is going to be two sets in antibonding, three sets in bonding for a net of one, giving us the single bond.

因此你能看到,反键轨道上有两组，三组成键，得到一组净成键，所以成的是单键。

麻省理工公开课 - 固态化学导论课程节选

They included Spider-Man 2 together with the original Spider-Man on one DVD as a two-for-one "special offer".

BBC: NEWS | Entertainment | Tracking down the pirate DVDs

The 1994 finals were the first in which three points were awarded for a win and one for a draw in the round-robin stage--previously, it had been two points for a win and one for a draw.

FORBES: Magazine Article

Dr John Ip, secretary of the Glasgow local medical committee and a GP in Paisley, said he used to be asked to write one or two such letters a week for patients, but over the last year this had increased to one or two a day.

BBC: Stethoscope