Child psychiatrists have long known that sometimes O. C. D. in children can be like that, that it can come on fast, out of the blue, like a plague, and then last anywhere from days to months.

儿童精神科医生们早就知道，有时儿童的强迫症可以突然发病，像瘟疫一样，然后症状可以持续从几天到几个月或者更长。

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I didn't evaluate the blue glue due to the vague plague.

因为不明确的疫疠，我没有对蓝色胶水估价。

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