an average of

基本解释

Many states with higher income and education levels are already near or below an average of two children per family.
在一些收入和教育水平較高的邦，平均每戶家庭衹生養了兩個或不到兩個孩子；
But in the short term, individual Americans buying cover for next year have already seen their premiums increase by an average of around 20%.
而從短期來看，每一個購買了下年毉療保險的美國人都已經看到他們的保費平均增加了20%。
Data captured by the DTW benchmarking tool during this test run showed that the database was processing an average of 302.93 transactions per second.
DTW 基準測試工具在這個測試執行過程中所獲得的數據表明，這個數據庫每秒平均処理 302.93 個事務。

American children now spend an average of seven and a half hours a day watching television or playing with electronic devices.
Okay. How many people would say they were off by an average of zero to ten percent?
多少人低估了,平均從0到10%
耶魯公開課 - 關於食物的心理學、生物學和政治學課程節選
It's got an average valence electron energy of about 16 eV, 16.5 eV, which is a lot greater than 11.
它的平均價電子能,大約是16eV，16。5eV，那比11要多很多。
麻省理工公開課 - 固態化學導論課程節選

Assuming an average of 20 claims each, that is 5, 000, 000 restrictions on smartphone innovation.
FORBES: Patent Wars Rage As Tech Industry Waits For Serious Reforms