huàn / zhě / chí / xù / gāo / shāo / bù / tuì / yī / shēng / huái / yí / tā / huàn / yǒu / rè / bìng

患者持续高烧不退，医生怀疑他患有热病。

The patient has had a persistent high fever, and the doctor suspects a febrile illness.