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The presidential plane was a military one and thus his ministry's ultimate responsibility.
总统专机是军用飞机，所以国防部应该负最终责任。

2.export tariffs 出口关税

China will raise export tariffs on certain rare earths products in 2011, Xinhua reports.
据新华社消息，我国从明年开始将调高某些稀土出口关税。

3.severe punishment 严惩

If you do wrong, you deserve severe punishment.
假如你做错事，就应受严厉的处罚。

4.show up 现身

In recent years, environmental and safety concerns have become very important for the automobile industry.
近年来，环境和安全问题对汽车工业显得越发重要。