play the leading role

基本解释

These iron-rich cells are the most common type of blood cell and they play the leading role in transporting oxygen around the body.
这些富铁细胞是血细胞中最常见的类型，它们在给全身运输氧气的过程中起着主导作用。
While alternative financing sources are important, the GDF notes that "industrialized country governments continue to play the leading role in mobilizing finance."
尽管替代性融资来源很重要，但《全球发展金融》注意到，"工业化国家的政府继续在动员资金方面发挥主导作用。"
My mother, two sisters and I went to Huntsville, the closest town with a selection of bridal shops, to buy the gown that would play the leading role on my special occasion.
我和母亲，连同两个姐姐前往最近的城市汉斯维尔的一些新娘服装店去挑选结婚礼服-这可是婚礼中至关重要的一个环节。

The government will have to play a leading role.
政府需要扮演主要角色。
普林斯顿公开课 - 国际座谈会课程节选

We do know that Depardieu has agreed to play the leading role in a film about Dominique Strauss-Kahn.
NEWYORKER: L’Étranger
What this plan recognizes is that while the federal government can play a leading role in encouraging the reforms and high standards we need, the impetus for that change will come from states, and from local schools and school districts.
WHITEHOUSE: Weekly Address: Education for a More Competitive America & Better Future The White House