They put forward many valid reasons for not exporting.

他们提出了许多有根据的理由来反对出口。

《柯林斯英汉双解大词典》

She had valid reasons for not supporting the proposals.

她有充分的理由不支持这些建议。

《牛津词典》

There are valid reasons boredom may feel so painful.

有充分的理由证明无聊会让人感到如此痛苦。

youdao

In reality those 3 reasons are just spurious excuses, not valid reasons for doing something.

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There may, however, be valid reasons why no one has successfully executed your concept yet.

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You would be surprised that many of them dis-like Facebook very much and for a valid reasons.

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