hero
英雄；（小说等的）男主角
The old man was a war hero.
这位老伯曾是一名战地英雄。
The hero of the story finally marries the princess.
小说中的男主角终于与公主结合了。
heroine
女英雄；（文学作品、影剧中的）女主角；偶像(=idol)
That timid girl has grown into a courageous heroine.
那个胆小的女孩已长大成为勇敢的女英雄。
What's the name of the heroine in the movie we saw last night?
昨晚我们看的那部电影女主角叫什么名字？
I used to love Irina, she was my heroine.
我曾爱过爱莲娜。她是我的偶像。
official
官方的；出自官方的；正式的，公开的；（文官）官员；主管
An official report on the murder investigation was issued by the police yesterday.
警方昨日发布了一则该起谋杀案调查的官方报导。
The official explanation of the event is not convincing.
该事件的官方解释没有说服力。
The company made an official announcement that they didn't bribe the government officials.
该公司发表正式声明，表示他们并未行贿政府官员。
The bill was strongly opposed by the officials.
这项法案遭到官员们强烈反对。
Company officials determine policy.
公司的主管决定政策。
officially
正式地，公开地；以官方身份地
They officially announced their engagement.
他们正式宣布订婚。
The organization has not yet been officially recognized.
该组织尚未获得官方认可。
unofficial
非正式的
President Obama paid an unofficial visit to Indonesia last week.
奥巴马总统上星期到印尼做了一次非正式的访问。
promise
诺言；承诺
Luke promised Gina that he would quit smoking.
路克向吉娜保证他会戒烟。
Grandma promised to teach me how to bake a cake.
奶奶承诺要教我烘焙蛋糕。
I don't trust him anymore because he failed to keep his promise.= I don't trust him anymore because he broke his promise.
他不守承诺，我再也不相信他了。
wheel
（汽车）方向盘；轮子
I get nervous whenever my wife is behind the wheel.
每当我太太开车时，我都很紧张。
Dad bought a four-wheel-drive jeep last week.
爸爸上星期买了一辆四轮传动的吉普车。
lawyer
律师
I suggest you consult a lawyer.
我建议你去请教律师。
attorney
律师
I refuse to answer any questions until my attorney arrives.
在我律师到达前，我拒绝回答任何问题。