例句
英语四级真题
  • Finally, on June 7, McLaughlin once again demonstrated his carelessness by knocking down several mailboxes near the edge of the company's parking lot.
    出自-2013年12月听力原文
  • However, the cow then moved through one of the nets knocking down a police officer in the process.
    2019年12月四级真题(第一套)听力 Section A
柯林斯高阶英汉双解学习词典释义
英英词典释义
  • Noun
    1. the sound of knocking (as on a door or in an engine or bearing);
    "the knocking grew louder"