通常，它们的目标序列具有回文结构，即从反向读和从正向读它们都是一样的。

Usually, the target sequences are palindromes, meaning they read the same backward and forward.

youdao

通常，它们的目标序列具有回文结构，即从反向读和从正向读它们都是一样的。

Usually, the target sequences are palindromes, meaning they read the same backward and forward.

youdao