broadly-based

基本解释

This research program has served to promote the assessment of English learning and set it on a more broadly-based scientific footing.
这项研究活动大力推动了英语学习评价的全面化和科学化。
This will only occur, however, if their GDP performance is broadly-based and if poor people are fully involved in the process of growth and development.
但是，只有使GDP增长建立在广泛的基础上，只有使贫困人口充分参与增长和发展的过程，这一目标才有可能实现。
He also directed a broadly-based effort which ultimately created the Bay Area Water Transit Authority, charged with delivering a high-speed ferry system to the San Francisco Bay.
他还集合并领导多方面人员，最终创建了海湾地区水运局，负责向旧金山海湾提供高速轮渡系统。
gov.finance.sina.com.cn

The showing made by the Brothers, Egypt's oldest and most broadly-based Islamist group, was especially impressive considering that hundreds of activists had been rounded up before the voting and several of its candidates had suffered open harassment.
ECONOMIST: Egyptian politics
The Djibouti agreement is supposed to swell Somalia's parliament with moderate Islamists, promising the country the first broadly-based government it has known since the collapse of Siad Barre's regime in 1991, the last time Somalia had anything approaching a government that controlled the whole country.
ECONOMIST: Ethiopia and Somalia
Industry officials are particularly excited because, unlike many existing drugs that are aimed at only a few tumors, VEGF-based drugs could prove to be broadly active against almost any cancer.
FORBES: Targeting Tumors

Something that is broadly based involves many different kinds of things or people.