grovel  
verb [ I ] uk/ˈɡrɒv.əl/ us/ˈɡrɑː.vəl/ -ll- or -l-
  (TRY TO PLEASE)      
  卑躬屈膝,奴颜婢膝,俯首帖耳
to behave with too much respect towards someone to show that you are very eager to please them
  He sent a grovelling note of apology. 他寄去了一封低三下四的道歉信。 
   (MOVE)      
 匍匐前进,爬行
to move close to or on the ground
  I was grovelling under the sofa, trying to find my contact lens. 我正爬到沙发底下找我的隐形眼镜。