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. involve vt.包含; 使参与，牵涉
例句：Running a kitchen involves a great deal of discipline and speed
料理好厨房需要把一切都安排得规规矩矩，且要讲求速度。

3. express vt.表达; 表示; 显而易见
例句：He expressed grave concern at American attitudes
他对美国的态度表示严重关切。

4. guarantee vt.保证，担保
例句：Some builders guarantee their work.
一些建筑公司对其承建工程提供质量保证。

5. approval n.批准;同意;赞成
例句：The chairman has also given his approval for an investigation into the case
主席也已同意对此案进行调查。

6. criticize vt.批评;评论;指责
例句：His mother had rarely criticized him or any of her children
他母亲很少指责他或她的任何孩子。
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