Never too old to learn, never too late to turn.
亡羊补牢，为时未晚。
It is not too late to mend the fold even after some of the sheep have been lost.
亡羊补牢，犹未为晚。
To shut the stable door when the steed is stolen.
亡羊补牢，贼去关门。
Stop putting things off. it's never too late to take precautions after suffering a loss.
不要再拖拖拉拉了, 亡羊补牢为时未晚!
He is never too late to mend.
改过不嫌迟。亡羊补牢，未为晚也。
GO to the police and tell what you have done. You should know the importance of locking the barn door after the horse was stolen.
到警察局去自首，你应该知道亡羊补牢的重要性。
Honest and Upright in Governmental Administration and House-Keeping--On Jia Zheng Who endeavoured for a vesurgence after “a sheep is found missing”;
廉洁从政 清正传家——评“亡羊补牢”、力求中兴的贾政
You have made a good many terrible blunders, It is time for you to correct them.lt is better late than never.
你犯了许多大错，也该改了，有道是亡羊补牢不可破，犹未为晚。
It is too late to shut the stable door after the horse has bolted.
等到马儿跑掉才关门，为时已晚。亡羊补牢，后悔已晚。
After Mary failed the examination she said she would study hard after that. She wanted to lock the barn door after the horse was stolen.
玛丽考试没及格，她说她一定努力学习，她要亡羊补牢。
No matter how difficult the conflict, crisis or situation, I always remember that it's never too late to clear up the past and begin resolution.
不论冲突纠纷多么严重，我一直记着捐弃前嫌，化解宿怨，见兔顾犬，亡羊补牢，为时都不算晚。
still waters run deeP ,my friend.well,buying a gift now is like closeing the gate after the horse has bolted.
冰冻三尺非一日之寒，哥们，现在买礼物如同忘羊补牢。
Textiles--Tests for colour fastness--Colour fastness to cross-dyeing:Wool
GB/T7076-1997纺织品色牢度试验耐交染色牢度:羊毛
testing method for color fastness to cross dyeing of wool
纺织品耐交染色牢度试验法:羊毛
Dyeing process for improving color fastness of dark shaded cashmere products
提高深色羊绒制品色牢度的染色工艺
To go to jail in South would mean the end.
在南方，坐牢将意味着死亡。
Textiles-tests for colour fastness Blue wool stardards for colour fastness to light and weathering
GB730-1998纺织品色牢度试验耐光和耐气候色牢度蓝色羊毛标准
I forgot to post this yesterday, so I will add an indignant postscript
我昨天忘了发信，今天要再补发点牢骚。