an extensive tour of Latin America.

在拉丁美洲的一次广泛游历。

She recently completed an extensive study of elected officials who began their political careers before the age of 35.

她最近完成了一项对35岁前开始政治生涯的当选官员的广泛研究。

The security forces have extensive powers of search and arrest.

安全部队拥有搜查和逮捕的至高权力。