double dog

例句：

1. 1. We decided to double down on our investment in the new technology.
   我们决定加倍投资于新技术。
2. 2. The dog was double-crossed by his owner.
   这只狗被它的主人背叛了。
3. 3. They double-checked all the information before presenting their report.
   在提交报告之前，他们再次检查了所有信息。