two-step hydraulic pressure

• 双级压力

two-step hydraulic pressure的用法和样例：

例句

1. Avoid relegation to alleviate a lot of pressure, perhaps Kosar in Henan before the match to give up all of a sudden TANG Tian.
   保级压力减轻很多，或许就是科萨在对河南队比赛前突然放弃唐田的原因。