"Dai" in Engpsh can be pronounced as "dye."
Its origin is not clear, but the surname "Dai" is a common surname in Chinese and other East Asian cultures.
Examples in Engpsh:
John Dai is a well-known businessman in the city.
The Dai family has a rich history in the region.
Translations:
约翰戴是这座城市著名的商人。
戴家在该地区有着丰富的历史。