"I couldn't get the safe open." in Spanish

No pude abrir la caja fuerte.

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Literal Breakdown

English	Spanish	Learn
not	no	Learn
could	pude	Learn
the (feminine)	la	Learn
box	caja	Learn
strong	fuerte	Learn

Summary

The Spanish translation for “I couldn't get the safe open.” is No pude abrir la caja fuerte.. The Spanish, No pude abrir la caja fuerte., can be broken down into 5 parts:"not" (no), "could" (pude), "the (feminine)" (la), "box" (caja) and "strong" (fuerte).