Their arguments all sound a little thin to me.

他们的论据我听起来都觉得有点儿缺乏说服力。

《牛津词典》

She had a little thin face and a little thin body, thin light hair and a sour expression.

她有一张瘦小的脸和一个瘦小的身体，稀疏的头发和一副闷闷不乐的表情。

youdao

A blanket of clouds—a little thin in places—spans the scene.

一片云海跨过这整张图像——有些地方有点薄。

youdao

German fans could be forgiven if their patience has run a little thin.

CNN: Harry Potter sparks scrums in Germany

Considering the incomprehensible reams of byzantine documents mortgage and other financial companies file I think their argument is a little thin.

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To be honest, the combat is more fun in the beginning and it does wear a little thin after a while.

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