gradually reduce

• 逐步缩小

gradually reduce的用法和样例：

例句

1. We must gradually reduce the wage gap.
   我们要逐步缩小工资差距。
2. Meanwhile, high temperature zones reduced gradually until fire extinguishments along with the vaporization of water mists.
   同时，细水雾不断吸热汽化，高温区域逐步缩小，直至火焰完全熄灭。