例句 /

A severe diarrhea disease causing damage to bone marrow and immune suppression. Fatal in up to 50% cases. Vaccinate every year for prevention.

A severe diarrhea disease causing damage to bone marrow and immune suppression. Fatal in up to 50% cases. Vaccinate every year for prevention.

一种严重的疾病,可导至骨髓破坏及免疫力下降,死亡率为百份之五十。预防方法:每年准行防疫注射。