A representative section is chosen in Guanghan layer exposed in the Chengdu Jinsha site in this article, and an initial research into its element geochemical behavior is done.

选取成都金沙遗址揭露的广汉层中一个代表性剖面，对其元素地球化学行为进行了初步研究。

youdao

Participants are a representative cross-section of ages, families and communities.

UNESCO: Culture

"They are not representative of any real section of the Irish people and they should disband, " he said.

BBC: Critical week for Northern Ireland

Again, I feel confident in saying that the biggest step that we can push for is for the government to begin that negotiation and begin it with a representative and broad cross-section of the people.

WHITEHOUSE: Press Briefing