We'll have to double up on books; there aren't enough to go around.

因为书不够人手一册，我们只好合用了。

《牛津词典》

You may not double up on Sagas, although Special Characters do not count towards this.

你不可以叠加传说，特殊人物不在此例。

youdao

One suggestion is to double up on the chocolate truffles and get 2 for $44.85, a true upsell.

其中一个推荐是指买2盒truffles巧克力只要44.85美元（译者注：单盒29.95美元），这确实是向上销售。

youdao

Remember we have to put one in each degenerate orbital before we double up on any orbital, so just keep that rule in mind that we would fill one in each p orbital before we a to the second one.

我们必须把,每一个放入简并的轨道,我们把每一个电子放在p轨道里，所以把规则记在脑子里,我们把每一个电子放在p轨道里,在我们放入第二个电子之前。

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Instead, he says that orchestral musicians as well as dedicated technologists will learn to double up on both traditional and digital instruments.

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Or if you have to take days off to play host, double up on workload either before or after their visit, so you're not coping with lost income as well.

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Then you double up on your performing goods.

FORBES: Magazine Article