to change something into a system for sending messages secretly, or to represent complicated information in a simple or short way

Many satellite broadcasts are encoded so that they can only be received by people who have paid to see them. 许多卫星传送的节目都是加密的，只有付费的用户才能收看。

Some music CDs are encoded with information about the performers and their music. 有些音乐光盘里加入了包含演奏者及其音乐作品信息的编码。

to use a word or phrase in a foreign language in the correct way

Grammatical information helps learners to encode sentences. 语法信息可以帮助学习者正确造句。