one-trick pony
noun /ˌwʌn trɪk ˈpəʊni/
/ˌwʌn trɪk ˈpəʊni/
(becoming old-fashioned, disapproving)- a performer who is only famous for one song, etc.; a person or business that is only good at doing one thing
“一招鲜”（指只有一首成名曲的歌手、单一特长的人或单一经营的企业） - This comedian is no one-trick pony.
这位喜剧演员并不止有一招绝活。 - For the first six years of its life the company was a one-trick pony. But what a trick!
在公司成立的头六年，它是一只只会玩一招的小马。但这是什么把戏！ - We were a one-trick pony before, and now we’re able to provide a full range of services.
我们以前是一个一招小马，现在我们能够提供全方位的服务。
- This comedian is no one-trick pony.