士气的英文：
morale

Heighten the morale of
提高...的士气

unbroken morale
未被挫伤的士气

The high morale of the troops
军队高昂的士气

Our company has been retailed some tattle and prate, so it's necessary to rise morale.
我们公司有许多流言蜚语在被风传，振作士气是很必要的。

Instead of demoralizing the French,it whips them into a frenzy.
法军不但没有士气低落，反而更加激怒。

Top military leaders say there have been reports of demoralization in the ranks.
最高军事指挥说有报告称士兵中出现了士气低落。

Boost morale
提高士气

highten the morale of
提高...的士气

Give a boost to the morale of the army
激励士气

The morale of the enemy troops is sinking lower every day.
敌军士气日益低落。

This is a moral issue.
这是一个道德问题。

He is wrong by moral standards.
按道德规范，他错了。

a high moral standard
很高的道德水准

Nothing remains but to draw the moral.
只要引出其中的教训就行了。

He lacks moral fiber.
他素质低下。