extensive

The house has extensive grounds.

这栋房子有宽敞的庭院。

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的官员的广泛研究。

After conducting extensive research in which he studied the festivals of many African groups of people, he decided that the new holiday should be a harvest or "first fruits" celebration, incorporating ideas from many different harvest traditions.

经过对大量非洲人群体的节日的广泛研究，他决定，新节日应该是对于收获或“初果”的庆祝，还结合了许多不同的收获传统中的概念。

The security forces have extensive powers of search and arrest.

安全部队有很大的搜查和逮捕的权力。

Had I not attended this workshop, I would have automatically assumed the man was the best candidate because the position required quite a bit of extensive travel.

如果我没有参加这个研讨会，我会自动假定这个人是最佳人选，因为这个职位需要经常出差。

First, we reviewed the extensive educational research that has compared academic outcomes in students attending single-sex versus coeducational schools.

首先，我们回顾了大量的教育研究，这些研究比较了单性别学校学生和男女同校学生的学业成绩。