痛打，打败

(verb) Defeat completely in a fight; to thrash

例句

EXAMPLE: The aggressive young corporation was able to trounce its main competitors, all of whom were out of business within a year.

这家咄咄逼人的年轻公司有能力打败主要竞争对手，对手们在一年之内都歇业了。

转折点

An event or a moment in time at which a major activity changed direction

EXAMPLE: Graduating from university is often a major turning point in the lives of many young people.

大学毕业，通常是很多年青人一生中的主要转折点。