billionth是什么意思

音标:英 ['bɪljənθ]美 [ˈbɪljənθ]

num. 第十亿个, 十亿分之一

position 1,000,000,000 in a countable series of things
s. the ordinal number of one billion in counting order

billionth的用法和例句：

1. Inflation says the early universe expanded much faster and further than previously thought, a million, million, million times, in less than a billionth of a billionth of a second.

膨胀理论中指出早期宇宙的 膨胀速度和距离都比以前认为的要快要远 在十亿分之一 十亿分之一秒内 膨胀了10万 10万 10万倍

2. Karma, for the billionth time, it was nothing.

卡玛 我都说了超多次了 没什么