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。
2
The suddenonset 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。
3
The suddenonset, dramatic symptoms, and rapid deterioration of patients, and the absence of a vaccine and effective treatment, invariably incite great anxiety in affected populations.