yī / shēng / zhèng / zài / gěi / bìng / rén / zuò / jiǎn / chá / yǐ / liǎo / jiě / mí / zǒu / shén / jīng / de / gōng / néng医生正在给病人做检查,以了解迷走神经的功能。The doctor is examining the patient to assess the function of the vagus nerve.