例句
英语四级真题
  • I'm afraid not, the stand-ins are already in use on line 6, and the ones from line 6 are being serviced.
    2016年12月四级真题(第二套)听力 Section B
柯林斯高阶英汉双解学习词典释义
英英词典释义
  • Adjective
    1. made ready for service