by ones and twos

• adv. 一两个(零零落落地)

例句

用作副词 (adv.)

1. Just change one or two words and the sentence will read smoothly.
   这句话只要动一两个字就顺了。
2. Our advertising is off to the side and in a couple of slots across the top.
   我们的广告是在边上或者是在最上面的一两个位置上出现。