为了保护隐私，我们总是先把客户信息加密后再存储。

To protect privacy, we always ___encode customer information before storing it.

这段DNA序列编码了一种重要的酶。

This DNA sequence ___encodes an important enzyme.

这首民歌用简单的旋律承载着古老的传统。

The folk song ___encoded ancient traditions in its simple melody.