The teacher told his students to answer up when the master came.
老师告诉学生,校长到来时回答问题要敏捷。
Answer up when the reporter asks you a question.
记者问你问题时,要回答清楚。
英汉双解词典包含483723条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。