unaffected

1. ADJ If someone or something is unaffected by an event or occurrence, they are not changed by it in any way. 未受影响的[v-link ADJ]

She seemed totally unaffected by what she'd drunk. 她似乎完全没有受到所喝的东西的影响。

2. ADJ If you describe someone as unaffected, you mean that they are natural and genuine in their behaviour, and do not act as though they are more important than other people. 质朴的[表赞许]

...this unaffected, charming couple. …这对质朴、可爱的夫妇。