Definition
Refer to put something in/put something into something
（參見 put sth in）
She put all her time into her research.
她把所有時間都投入到她的研究中。
You should put more effort into this project.
你應該在這個專案中投入更多努力。
During this trip, I put all my heart into enjoying every moment.
在這趟旅程中，我全心投入享受每一刻。