The difference today, to pick a completely politically neutral term

如今所不同的，只是挑一个政治立场上完全中性的词 来形容它。

" Humid" is a more general, perhaps a more neutral term.

“潮湿”是一个更笼统的词，也许是一个更中性的词。

This is why the more neutral term substance is now used by many physicians and psychologists.

这就是为什么现在许多医生和心理学家使用更中性的术语物质。