基本解释空载；零线英汉例句双语例句The last of Pelops' sons has perished! The royal line of Argos has been severed, and all their efforts have been for naught.最后珀罗普斯的儿子也倒下了！去阿尔戈斯线路已经被切断，现在所有的一切努力都是徒劳。naught line更多例句专业释义动力与电气工程零线