to double down ------- 加大力度（非正式）

英文释义
(INFORMAL) To increase one's commitment to a specific idea, strategy, or course of action, although it is uncertain and involves risk.

例句
Although the giant company was losing money because it hired so many new sales representatives recently, the president decided to double down and recruit even more new sales people.
尽管由于这家大公司不久前招聘了很多新的销售代表而亏损，但总裁决定加大力度，还要招聘更多的新销售人员。