单词：slither 

动词

• 
  [1.v.slither] (同义词:[slither( vi. 不稳地滑动 vt. 使滑动 )]  [slide( v. (使)滑动, (使)滑行 n. 滑, 滑动, 幻灯片 )]  )
• 
  注释列句：to pass or move unobtrusively or smoothly; "They slid through the wicket in the big gate"
• 上位词 -> [travel( v. 旅行, 传播 vi. 行进, 传播 n. 旅行 )]