病情反复英文

应该是frequent

复发英文是relapse、recur、have a relapse、recurrence、recrudesce、flare-up。

My grandmother's illness is likely to recur.

我奶奶的病有可能再复发。

Done right, a new European architecture may ensure that such a crisis does not recur

如果事情做对了，一个新的欧洲架构将会确保这类危机不再发生。

复发英文造句：

1、Although these mild episodes of mania last only two or three days, they recur frequently, Merikangas said.Merikangas说，虽然这些轻度躁狂发作只持续2到3天，但它们频繁发作。

2、Emerging-market crises have been too quickly forgotten, which only makes them more likely to recur.而新兴市场过去的危机被过快的忘记了，这只会让它们更加可能重演历史。

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