decipher

decipher [=decode] a secret message破译秘密信息

The ancient scrolls were recently deciphered. [=translated]古代卷轴最近得以破译。

We spent hours trying to decipher [=figure out] the lyrics to the song.我们花了好几个小时试图弄懂歌词的意思。

I couldn't decipher his sloppy handwriting.我无法辨认他潦草的笔迹。