Tā shì zǒngjīnglǐ de zhùlǐ.
She is the general manager's assistant.
Zhùlǐ jiàoshòu shì zuì dī de jiàoshòu děngjí.
Assistant professor is the lowest professor rank.
Tā cóng zhùlǐ zuò qǐ, xiànzài yǐjīng shì jīnglǐ le.
He started as an assistant and is now a manager.