词汇“be on the ball”用英语简单造句子的方法、技巧、例句及翻译-英语例句辞典

单词	be on the ball
例句	DEFINITIVE EXAMPLES 权威例句〔ball〕With so many intelligent students, the teacher must always be on the ball.班上有那么多聪明学生，老师上课时必须时刻随机应变韦氏高阶
随便看	regional station regionalism regionally regions regis register register as register for register office register with registered registered letter registered mail registered nurse registered post registered trademark registered voter registering registers registrant registrar registrars registration registration desk registration fee

英语例句辞典收录了559068条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。