按单国来论，美国在世界上仍然遥遥领先。

As an individual country, America still leads the world by some distance.

youdao

汽车车牌尾号按单双号来进行隔天的限行。

Cars will be banned on altemate days depending on whether license plates end in odd or even numbers.

youdao

按单加工是一个基本的例子，消费者订购的货物在工厂中定制。

Build-to-order is a prime example in which the consumer orders goods that are customized at the factory.

youdao

It is not monogamous is another way of putting it.

按另一种方式也不是单配的。

麻省理工公开课 - 固态化学导论课程节选