pump energy

例句：

1. 1. The new engine can pump up to 500 horsepower.
   这款新发动机能输出高达500马力。
2. 2. The team needs to pump up their morale before the big game.
   在重要的比赛中，团队需要提振士气。
3. 3. The scientist injected a small amount of chemicals into the water to test its pH level.
   科学家向水中注入少量化学物质以测试其酸碱度。