1.tweak v. 稍稍调整(机器、系统等)
例句:He expects the system to get even better as the engineers tweak its performance.
他预计在工程师对其性能稍加改进后,该系统会运行得更加良好 。
2.game changer 打破格局、扭转局面的事物
例句:The sudden economic slowdown was an unexpected game changer for the election.
经济增长突然放缓为选举带来了意想不到的变数 。