基本解释

• [机械工程]履带式开土机

英汉例句

双语例句

• The jaws of the bucket opened; the bulldozer retreated on its caterpillar treads and almost flipped over as it was suddenly lightened of its load.
  铲车上下颌张开，踩着履带后退。它是如此轻快的后退着好像突然卸去了重负。

专业释义

机械工程

• 履带式开土机