Jiǎn / chá / shí / yī / shēng / fā / xiàn / tā / de / shé / xià / yǒu / yí / gè / xiǎo / náng / zhǒng

检查时，医生发现他的舌下有一个小囊肿。

During the examination, the doctor found a small cyst under his tongue.