Within a day or two, the pool’s water could completely boil away.

用不上一两天的时间，池中的水就会被完全烧干。

youdao

Usually within a day or two, everyone starts using the same terminology.

通常在一两天之内，每个人都开始使用相同的术语了。

youdao

Fruit may begin to spoil within a day or two after cutting, however some fruits can be purchased in frozen or canned forms that last much longer.

已经切好的蔬菜与水果是很方便的但是你不要想可以把他们放得很久。水果会在切后的一天或两天内变质但是一些水果可以用冷冻的方法或者罐藏的方法得到更长时间的保存。

youdao

The incident probably took place within a day or two of Mister Wesley's observation.

VOA: special.2009.08.25

So it will be available within a day or two after.

所以会在课后一两天内放到网上。

哈佛公开课 - 幸福课课程节选

Redington and Ingram Micro are expected to start booking pre-orders within a day or two, the paper reported.

FORBES: After Delivery Snags, India Gets Apple iPhone 5 Next Week

At first, almost all poultry that caught bird flu quickly sickened and died within a day or two.

ECONOMIST: Animal and human health

Mr. MCDERMOTT: In fact, it was something that was presented to higher officers within a day or two after it occurred.

NPR: Charges Expected Against Marines in Haditha Case