In nineteen seventy-five, much of the Dolly Sods area became part of the National Wilderness Preservation System.

VOA: special.2009.07.20

And if something from the field of consulting in organizational behavior could contribute, that became part of the class, as much as I could fit in of course in one semester.

而如果一些有关组织行为学的咨询领域的东西有用，那也会成为本课程的一部分，只要能在一个学期内讲完。

哈佛公开课 - 幸福课课程节选

They became part of a group of artists that were helping to redefine visual culture.

VOA: special.2009.08.09

The expression "to buffalo" soon became part of the speech of the American west.

VOA: special.2009.02.15

One of his most emotional love songs never became part of a musical play,however.

VOA: special.2009.02.08

Thanks to her efforts, many Impressionist paintings became part of American art collections.

VOA: special.2009.07.12

The name of Lee De Forest became part of broadcasting history.

VOA: special.2010.01.31

Missus Benny soon became part of the traveling show.

VOA: special.2009.10.11

And it became part of his electrifying stage performances.

VOA: special.2010.05.16

Local granges became part of the national grange movement.

VOA: special.2010.04.15

After Poltava,Ukrainians became part of the Russian empire.

VOA: standard.2009.12.25

Drugs that need a doctor's prescription became a bigger part of the debate over health care costs in two thousand three.

VOA: special.2009.08.14

Clemente's work helping poor people, especially those in Puerto Rico, became a very important part of his life.

VOA: special.2010.04.11

He became interested in the idea of sanitation after taking part in a research project on the social and political development of cities.

VOA: special.2010.03.15