tā / zǒng / shì / chén / mò / bù / yǔ / ràng / rén / jué / de / tā / de / xiǎng / fǎ / gāo / shēn / mò / cè

他总是沉默不语，让人觉得他的想法高深莫测。

He is always silent, making people feel that his thoughts are unfathomable.