2. diagnose vt.诊断; 判断
例句:He could diagnose an engine problem simply by listening.
他仅靠听就能判断发动机出了什么问题。
3. combat vt.与…战斗; 与…斗争
例句:The soldiers were engaged in hand-to-hand combat with the enemy.
战士们与敌人展开了肉搏。
4. prove vt.证明,证实
例句:Please prove your identity.
请证明你的身份。
5. approve vt.赞成,同意
例句:I quite approve of the idea of your plan.
我很赞成你的计划中的构想。
6. attack vt.攻击,进攻
例句:He tried to attack the problem from different angles.
他试着从各个角度来着手解决这个问题。