vacant line
基本解释
- [电子、通信与自动控制技术]空闲行
英汉例句
- A plausible reason is that all the dinosaurs had been killed off, except the line that evolved into birds, and the placental mammals speciated into the ecological niches that had been left vacant.
一个可能的原因是所有恐龙除进化为鸟的一支外都死掉了，胎盘类哺乳动物才在被空闲出来的生态龛中得以进化。
双语例句
词组短语
- vacant charge line 空料线
- line of vacant sites 空位线
短语
专业释义
- 空闲行