1.一失足成千古恨，再回首已百年身。
A little neglect may breed great mischief.
2. 狗嘴里长不出象牙来。
A cracked bell can never sound well.
3. 种瓜得瓜，种豆得豆。
As you sow， so shall you reap.
4.初生之犊不畏虎。
A-day-old puppy doesn't know to be afraid of the tiger.
5. 欲加之罪， 何患无辞。
He who has a mind to beat his dog will easily find his stick.
（责任编辑:doublejp）
