The President is making every effort to obtain the release of the hostages.
Six visiting businessmen were taken hostage by rebel groups.
A prison librarian held hostage for 13 hours has been freed.
英语词典包含67175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。