to fail to reach an amount or standard that was expected or hoped for, causing disappointment
未达到数量（或要求）

例句：

August car sales fell short of the industry’s expectations. 8月汽车销量未达到业界的期望。

He shot an arrow, but it fell short of the target. 他射了一箭，但没有射中靶。

Many Americans, young and old, fall short on vitamins, minerals, and other nutrients, dietary surveys show. 有膳食调查显示：许多美国人，不论年轻人还是老年人，都缺乏维生素，矿物质和其他营养元素。

His behaviour falls short of accepted standards. 他的行为没达到公认的标准。

Because even if we fall short, what better way is there to live? 因为即使我们没达成目标，那又怎么样？还有比这更好的生活方式吗？

How can we fall short on such important goals year after year? 年复一年我们怎么总会功亏一篑？