This is the 11864th most frequent Russian word.
запечатаны
"Sealed."
The word 'запечатаны' in this sentence implies that the books were closed off and secured inside the box using some sealing method.
Книги были запечатаны в коробку.
The books were sealed in a box.
Here, 'запечатано' indicates that the letter was physically closed and secured using wax for protection or secrecy.
Письмо было запечатано воском.
The letter was sealed with wax.
In this sentence, 'запечатаны' is used metaphorically to convey that the memories are securely and deeply stored in his heart, emphasizing emotional connection.