这位制缰师专门为赛马定制手工皮革缰绳。

The ___reiner specializes in crafting handmade leather reins for racehorses.

作为一名经验丰富的驯马师，他擅长训练马匹完成复杂的绕桶动作。

As an experienced ___reiner, he excels at training horses to perform intricate barrel patterns.

莱纳先生是这家德国公司的首席执行官。

Mr. ___Reiner is the CEO of this German company.