Many of his ideas have value, but some are dated and others are plain wrong.

他的许多想法都有价值，但也有一些不合时宜，还有一些很明显是错误的。

《柯林斯英汉双解大词典》

In fact, I think it's just plain wrong.

事实上，我认为这种想法完全错误。

youdao

The calorie theory is just plain wrong.

卡路里的理论显然是错误的。

youdao

In an unusual strike back, which surprised even myself, Pearson said this story was plain wrong.

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Many people may think this next statement to be idealistic, naive or just plain wrong.

WHITEHOUSE: The Joy of Sustainability

Assumptions about investor risk tolerance implied in age-based asset allocation models are just plain wrong.

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