Dig deeper→ 더 알아보는, 더 조사해보는

Dig deeper (phrase) - to do a very thorough investigation into something.

비슷한 용어: research further, explore further, invertigate further

I should have dug deeper into the material before the test. → 시험전에 더 깊이 공부를 했어야 했어.                                            

The teacher told me to dig deeper before I start my project. → 선생님이 과제를 시작하기 전에 더 공부하고 시작하시래.