umpteenth

基本解释

I explained for the umpteenth time why I didn’t support the bill.
我第无数次向他解释我不支持这项法案的原因。
The bar for success is high for HP. It must not only show a compelling product in an area where it is the umpteenth player, it has to establish a new platform.
对惠普而言，成功的距离还有很远，他们不仅必须以目前的半草根身份推出一款具备竞争力的产品，而且还需要确立一款新的产品平台。
Nobody knows for sure how much will be raised by a renewed clampdown on tax evasion or the umpteenth fiscal amnesty declared by a Berlusconi cabinet (this time for previously undeclared property).
Berlusconi的一位内阁称，通过对偷税的新一轮的打击和第无数次的财政特赦，没有人能够确切的知道将会提高多少。

Dislosure: For the umpteenth time, I worked at AOL before joining Forbes last October.
FORBES: AOL Defector Blasts 'Content Farming' and 'SEO Spam'
On the corner of a congested Dallas intersection the umpteenth 7-Eleven is being built or, rather, assembled.
FORBES: Meet The Startup Making Snap-Together Office Buildings, Schools And 7-Elevens
After my umpteenth failure, an incredible realization washed over me: No one cared.
FORBES: No One Cares About You -- And That's Great

You use umpteenth to indicate that an occasion, thing, or person happens or comes after many others.