英语词汇“ball signal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ball signal
释义	ball signal noun : an object like a ball hoisted manually to the top of a track-side pole in early railroading to indicate that the way was clear for an approaching train — compare highball
随便看	caudad cauda equina cauda helicis caudal caudal caudal analgesia caudal anesthesia caudal artery caudal fin caudally caudal peduncle caudal vesicle caudata caudate caudate caudated caudate lobe caudate nucleus caudati caudation caudatolenticular caudex caudi- caudi caudicle

英语词典包含332784条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。