1.step back from the brink 悬崖勒马

2.do something all by oneself 单枪匹马

3.scratch the surface 走马观花

4.Calling a deer a horse 指鹿为马

5.Clothes make the man. 人靠衣服马靠鞍

6.Every cloud has a silver lining 塞翁失马焉知非福

7.to have speedy success 马到成功

8.to take the lead 一马当先

9.an old hand knows the ropes 老马识途

10.old but full of vitality 龙马精神