zhè / wèi / jiào / shòu / zǒng / shì / mò / cè / gāo / shēn / ràng / xué / shēng / hěn / nán / cāi / tòu / tā / de / xiǎng / fǎ

这位教授总是莫测高深，让学生很难猜透他的想法。

This professor always seems unfathomable, making it hard for students to guess what he is thinking.