There has been below average rainfall this month.

这个月的降雨低于平均降雨量。

《牛津词典》

She was of below average height, petite and slender.

她低于平均身高，娇小且苗条。

《柯林斯英汉双解大词典》

There have been four years of below average rainfall.

已经有4年降雨量低于平均水平了。

《柯林斯英汉双解大词典》

Parts of Australia have seen below-average rainfall for several years and the outlook for many parched communities is not good.

VOA: standard.2009.09.03

Half of you did above average on the Midterm; half of you did below average on the Midterm, but if I went up and asked each of you why the answers would not be symmetrical.

你们当中有一半人期中考得比平均分高;,有一半期中考得比平均分低，但如果我去问你们为什么,答案会各有不同呢。

耶鲁公开课 - 心理学导论课程节选

OK, elements with low average valence electron energy, and here I'm saying below 11 electron volts, these are good electron donors.

平均价电子能都较低的元素，我是指那些低于11电子伏的，这些是很好的电子给体。

麻省理工公开课 - 固态化学导论课程节选

But Porges warns that Amgen's U.S. product sales could be 2% below average estimates.

FORBES: Two Picks In Biotech Ahead Of Earnings

What really matters is price, which is, at least through one important metric, historically below average.

FORBES: Bad News Usually Spells Good Buys

Mr. SILVIA: The numbers for the next three to six months will be below average.

NPR: U.S. Economy Sheds Fewer Jobs Than Expected