How was I to know you'd be back so soon?我怎么会知道你会这么快就回来？
How was I to know the letters were fakes?我怎么知道这些信件是假的？
英汉双解词典包含368430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。