predominantly是什么意思？

Newly developing countries that are beginning to industrialise, primarily in Africa, with high to very high population growth rates, and characterised by a predominantly young age profile.

This nameless person pushed the human race over a historic threshold, for it was in that year that mankind became, for the first time in its history, a predominantly urban species.

Then, in 1973, the predominantly Arab nations of the Organization of Petroleum Exporting Countries (OPEC) resolved to stop selling oil to the United States.

Perhaps, the study speculated, having a white roommate helps academically prepared black students adjust to a predominantly white university.

Movement out of city centers was widespread, and downtown tenants were predominantly made up of the working poor.