loyal
单词辨析：
指对某人、政党、信念等忠诚的，通常作定语；也指在爱情上忠贞不二的。
Bob has always been a faithful friend of our family.
鲍勃一直是我们家忠诚的朋友。
He is a man who always remains faithful to his principles.
他是一个忠于自己原则的人。
After their marriage, she was faithful to her husband.
婚后她对丈夫很忠诚。
指忠于朋友、国家、原则等并一直对其加以支持的。
He remains loyal to the government despite criticism against it.
尽管政府受到指责，他依然效忠于它。
Her whole family were loyal supporters of the Lakers.
她全家人都是湖人队的忠实球迷。
指某人或某事物可以信赖、依靠的。
He is a reliable friend.
他是一位可以信赖的朋友。
They need a reliable method to decrease the divorce rate.
他们需要一个可靠的办法来降低离婚率。
指武器、车辆、宠物等长期以来一直可以信赖的，通常作定语，常为幽默用法。
He used to ride his trusty bike to meet his girlfriend.
他过去常骑着他那辆忠心耿耿的自行车去见女朋友。
She had her trusty dog with her.
她把她那条忠实的狗带在身边。
相关例句：
It is hard to be both loyal and filial at once.
忠孝不能两全。
I only keep frequent contact with a few very close and loyal friends here.
我只和少数几个我在这里的非常亲密和忠诚的朋友保持着密切的联系。
The captured soldiers and commanders died, loyal to the last.
被俘将士以死尽节。
And you promised to be loyal.
而你对我承诺会对我忠诚。
Since I had collected few2010 New Year wallpapers, I decided to share them with my loyal readers.
由于我收集了一些2010年新年壁纸，我决定和大家分享我的忠实读者们。
He is a loyal friend.
他是一位忠诚的朋友。