We needed to do decimals to round up and round down numbers.

我们需要把小数四舍五入成整数。

《柯林斯英汉双解大词典》

Up and down they went, and round and round.

他们飞上飞下，还绕着圈子飞。

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Roaming up and down, round and round, he at length heard a slight movement of the horse close at hand; and the sleeve of his overcoat unexpectedly caught his foot.

他转来转去，上上下下地寻找了好久，后来听见附近有马轻轻活动的声音；他的脚也意外的绊到了他的外衣的袖子上。

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Glyphosate is a chemical used in Round-Up and other weed killing products.

VOA: special.2010.04.27

Trail drives usually began with the spring "round-up."

VOA: special.2010.03.18

The lead up to Afghanistan's second round of voting is beginning much like the first round under the Taliban's threats of violence.

VOA: standard.2009.10.24

Meanwhile, FATV will continue to broadcast one or two games per round up to the fifth round via the Football Association's official website and will continue to host games online in the future as the project expands.

BBC: ESPN secures four-year deal to broadcast FA Cup matches

This round-up of Monday's main media stories focuses on the return of X Factor.

BBC: The return of the X Factor

They can round up a few in the Expert Network but others will follow.

FORBES: Going After Wall Street's Dealers When The Addicts Are The Problem