1. announce vt. 宣布; 述说; 声称
例句:He will announce tonight that he is resigning from office
他将于今晚宣布辞职。
2. investigation n.侦查; (正式的) 调查
例句:We are making a thorough investigation
我们正在进行彻底调查。
3. examine vt.检查,调查; 考试
例句:He examined her passport and stamped it
他仔细检查了她的护照,然后在上面盖了章。
4. classify vt. 分类,归类
例句:He carefully began to classify the results of his examinations.
他开始细心地为他的检验结果分类。