For example, while it's hard to believe that a three kilogram lobster could elude scientists, it did until a few years ago when South African fishermen requested an export permit and scientists realized that this was something new to science.
比如，尽管难以置信， 一只三公斤重的大龙虾可以逃过的科学家的眼睛， 但事实上，直到几年前， 当时南非渔民要求获得出口许可证时 科学家们才发现这个新物种。