叙述语：says a proverb 俗话说（倒装句）
【主语】a proverb
【谓语动词】says
直接引语：There are only two creatures whocan surmount the pyramids-the eagle and the snail 只有两种动物可以登上金字塔顶 —鹰和蜗牛.
【引导词】There （引导存在句）
【谓语动词】are
【主语】only two creatures
【定语从句】who can surmount thepyramids-the eagle and the snail 其中——
—关系代词兼主语：who
—谓语动词：cansurmount
—宾语：thepyramids
—who 的同位语：the eagleand the snail
变通翻译：俗话说 “只两类动物才可以登上金字塔,那就是飞展翅高飞的大鹰和锲而不舍的蜗牛.”