This is the 625th most frequent Chinese word.
投入
"投入" means "to devote, invest, or immerse."
Here '投入' implies investing resources such as time and energy into a goal or endeavor.
为了实现梦想，她投入了大量的时间和精力。
To achieve her dreams, she invested a lot of time and effort.
In this example, '投入' depicts a state of being deeply absorbed or engrossed in an activity, like watching a movie.
这部电影让我完全投入其中，忘记了时间。
This movie absorbed me completely, and I lost track of time.
In this sentence, '投入' means to dedicate oneself fully to an activity or cause, showing engagement and commitment.