This marsupial inhabits the deserts of central Australia where the onset of rains and the resulting sudden growth of vegetation are extremely unpredictable.

这种有袋类动物生活在澳大利亚中部的沙漠中，那里的降雨和植被的突然生长是极其不可预测的。

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The sudden onset of the disease is known as an Addisonian crisis, which may be rapidly fatal.

艾迪生病的突然发作是非常危险的，它可以导致迅速死亡。

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The sudden onset, dramatic symptoms, and rapid deterioration of patients, and the absence of a vaccine and effective treatment, invariably incite great anxiety in affected populations.

突然发病、显著症状、患者病情迅速恶化以及缺乏疫苗和有效治疗，常常引起受感染人群的巨大焦虑。

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Even when the details of credit default swaps and high yield bonds lead to fits of sudden-onset narcolepsy!

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Following the incubation period, a sudden onset of flu-like signs and symptoms occurs.

CNN: Smallpox

Acute pancreatitis begins as a sudden onset of sharp pain in the mid- and upper abdomen.

CNN: What could be causing my pancreatitis?