This is the 13238th most frequent German word.
aufschließen
To unlock or to open something (e.g., a door) using a key; can also mean to make accessible or to catch up.
In this sentence, 'aufschließen' is used to mean unlocking something, typically a door or barrier, using a key or similar tool.
Ich musste die Tür erst aufschließen, bevor ich eintreten konnte.
I had to unlock the door before I could enter.
Here, 'aufschließen' is used in a metaphorical sense to mean making accessible or opening up new opportunities or areas, such as markets.
Das Unternehmen möchte neue Märkte aufschließen.
The company wants to open up new markets.
In this context, 'aufschließen' is used figuratively, meaning to uncover or make clear new information or knowledge.