as the saying goes as引导状语从句。
saying
n. 谚语，格言，警句；（尤指政治或宗教名人）格言集；言论，话
v. 说（say 的现在分词形式）
例句
She hurried away without saying goodbye.
她连声再见都没说就急忙离开了。
He sommer hit me without saying anything.
他只是打了我，什么也没说。
I could hear every word they were saying.
我可以听到他们说的每一个字。
