Yinz is not standard American English.

yinz 不是标准的美式英语。

Note that the speaker used the term yinz.

请注意，说话者使用了 yinz 这个词。

Other common regionalisms in the U.S. are youse guys, you-uns, and yinz.

美国其他常见的地方主义是 youse guys、you-uns 和 yinz。

And if you hear you guys, y'all, youse, or yinz, you might have an idea of where the speaker comes from within the United States.

如果你听到 you guys，y'all，youse 或 yinz，你大概就会知道说话者来自美国的哪个地方。