没人知道如何治疗这种可怕的疾病。

No one knew how to treat this dreaded disease.

《柯林斯英汉双解大词典》

医学研究的一些成果有助于控制这种可怕的疾病。

Some achievements in the medical research helped control the terrible illness.

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如果没有人打扫街道，把垃圾带走，可怕的疾病很快就会出现并且很容易传播。

If no people clean streets and take the rubbish away, terrible diseases will soon appear and spread easily.

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