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。
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。
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。
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。
To shut the stable door when the steed is stolen.
亡羊补牢，贼去关门。
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
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。
lock etc the stable door after the horse has bolted try to prevent or avoid loss,damage,etc when it is already too late
亡马锁厩,为时已晚;
lock the stable door after the horse has gone
"事后补救,为时已晚"
At 9 pm the prisoners are locked in for the night.
晚9时把犯人锁进牢房过夜.
He did a long stretch for attempted murder.
他因谋杀未遂罪坐了很长时间的牢。
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。
It's just in time to rein in at the Brink of the precipice; But it's too late to mend the ship's leak in the middle of the river
悬崖勒马犹未晚,船到江心补漏迟
"Abased by sin, and half maddened by the ignominy that was still new, when they had talked together in the prison-chamber."
当晚他俩在牢房中谈话时,她是刚刚肩负犯罪的重压,并为羞耻之心逼得半疯的。