He is my good teacher and helpful friend.
他是我的良师益友。
He is a good friend that speaks well of us behind our back.
背后褒扬，乃是益友。
Eventually, he was excommunicated along with his mentor.
最后他和他的良师益友被逐出教会。
In other words, they are our good teachers and wise friends.
换句话说，它们是我们的良师益友。
Associating with good friends is no less important to us than choosing good books.
交益友与选择好书对我们同样重要。
Is there a mentor or close friend with whom to share your challenges and vision?
可有一位良师益友火亲密的朋友来分享你的挑战和梦想吗？
a lifelong interest, friendship, wish
终身权益、 友谊、 愿望.
Always stand up for your friends.
要永远维护朋友的利益.
Activities held by the alumni bring economic benefit.
校友会活动给校友们带来了经济效益
As friendships solidify, ties strengthen.
随着友谊日益巩固，友谊的纽带也更加坚固。
Personal friendship must not be allowed to interfere with the collective interest.
私人友谊不能妨碍集体利益。
A close friendship gradually grew up between them.
他们之间的友谊日益亲密.
More and more foreign friends come to visit China.
来华参观访问的外国朋友日益增多。
I am the gainer by our personal friendship.
通过我们私人的友谊我获益非浅。
Criticism from friends is more helpful than flattery.
朋友的批评意见比恭维 奉承更有益.
How should my friend safeguard the rights and interests of oneself?
我的朋友该如何维护自身的权益呢?
He betrayed all his friends on his own account.
他为自己的利益出卖了所有的朋友。
A person who shares one's interests or activities; a friend or companion.
同志与别人共享利益或一起参加活动的人；朋友或伴友