umpteenth
adj. 第无数次的
例句
He checked his watch for the umpteenth time.
他看了无数次表。
《柯林斯英汉双解大词典》
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。
Not so many remember the umpteenth collapse of the American economy a few months before.
没有多少人记得几个月前美国一连串的经济崩溃。