Long long ago, all the people speak the same language . When they transferred to the east, they found a plain and then lived there. They decided to build a tall tower, so that it can stretch to the heaven and they can live in the heaven. When Jesus saw this, he was afraid that if all the people speak the same language, they can do everything they want. So Jusus went down from the heaven and confused their languages so they couldn’t communicate with each other and they didn’t finish the Bable Tower. Since then, people lived in different places and spoke different languages. Hence comes the
Giving the meaning of (sth said or written) in another language. (The Advanced Learner’s Dictionary of Current English);
Expressing in another language, systematically, retaining the original sense. (Amercian Heritage Dictionary).