Each year an estimated 500,000 people with dengue hemorrhagic fever require hospital treatment.

每年估计有500,000出血性登革热患者需要医院治疗。

youdao

Each year an estimated 500,000 people with dengue hemorrhagic fever require hospital treatment.

每年估计有500,000出血性登革热患者需要医院治疗。

youdao