语法高手请进!

funny68UID: 192763

Female sea turtles ,before laying (her)eggs,swim as (much) as 2000 kilometres (to return) to the beaches where they themseves were hatched.

her 是不对，as much as 好象也不对呀

piaolingloveUID: 197813

看了看字典，as much as 一个短语，表示同样的。所以我想这里可能并不是直接修饰kilometers,而是表示一个程度。