好大的一个鸡蛋英语怎么说

"A big egg" in English is "a large egg."
The phrase "big egg" is a simple and straightforward way to describe an egg that is larger than normal size. It doesn't have any specific origin or connotation.
Examples:
"I want a big egg for breakfast, please." (我想要一个大鸡蛋吃早饭)
"The chicken that laid this egg must have been huge - it's a big egg!" (这只鸡一定很大，它下的鸡蛋也很大)
"I found a big egg in the chicken coop." (我在鸡舍里找到了一个大鸡蛋)