Two dogs strive for a bone, and a third runs away with it.
鹬蚌相争，渔翁得利。
Two heads are better than one.
一个好汉三个帮。
Two of a trade seldom agree.
同行是冤家。
Two wrongs do not make a right.
别人错了，不等于你对了。
Unity is strength.
团结就是力量。
Unpleasant advice is a good medicine.
忠言逆耳利于行。
Until all is over one's ambition never dies.
不到黄河心不死。
Venture a small fish to catch a great one.
吃小亏占大便宜。
Virtue is fairer far than beauty.
美德远远胜过美貌。
Walls have ears.
小心隔墙有耳。
Wash your dirty linen at home.
家丑不可外扬。
Water dropping day by day wears the hardest rock away.
滴水穿石。
Wealth is nothing without health.
失去健康，钱再多也没用。
We know not what is good until we have lost it.
好东西，失去了才明白。
Well begun is half done.
好的开始，是成功的一半。
We never know the worth of water till the well is dry.
井干方知水可贵。