[fǔ shǒu jiù fù]   

俯    首    就    缚    低下头让人捆绑。形容无法反抗或自愿认罪。

Droop one's head and allow oneself to be bound -- to give no resistance

俯首戢耳    俯拾仰取    俯仰由人    俯首帖耳    俯首称臣