take one unaware before one is prepared catch one off guard
take one unaware
before one is prepared
catch one off guard
出其不意用英文怎么说
出其不意，攻其无备用英文怎么说
出具用英文怎么说
出具发票用英文怎么说
英语词典收录了最新的汉英词典和英汉词典，总共有200多万个词条，词库仍在不断更新中。
