With some very strong regional accents, there is a tendency to replace 'th' with a 'ff' - "through" may sound like "froo".

有的地区口音很重，他们倾向于将th替换为ff，比如将through念为froo。

youdao

Most other accents — such as Texan or Australian — carry strong regional connotations, which can be positive or negative, depending on your brand.

大部分其他口音——比如（美国）德克萨斯州或澳大利亚——有很强地方性寓意，或正面或反面，视你的品牌（服务目标）而定。

youdao

Unless they are very strong, these accents are usually not as hard for foreigners to understand as the U.K. regional accents.

除非寓意非常强，否则这些口音还是不会比英国方言难理解。

youdao

Regional accents are going strong around the United States, bringing with them all kinds of cultural flavor.

CNN: Regional accents thrive in U.S. -- but is that a good thing?