乃至

HSK 7-9

nǎizhì

and even; up to; until

to go so far as to

他甚至可以自学成才。

tā nǎizhì kěyǐ zìxué chéng cái

He even managed to teach himself.

这种动物乃至可以飞翔。

zhè zhǒng dòngwù nǎizhì kěyǐ fēixiáng

This animal can even fly.