Our observations may contain a grain of truth for you to refer to.

我们的意见也许会有千虑一得之处，供你参考。

《新英汉大辞典》

The old wives' tale that a woman loses one tooth for every child she delivers may, in fact, contain a grain of truth.

女人每生一个孩子就掉一颗牙这种无稽之谈事实上可能包含一点点真理。

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