primary source material

基本解釋

Source material: Primary source for all four librettos is Schott's 1899 vocal scores (republished in the United States by Schirmer in 1904).
資料來(lái)源：四個(gè)版本都來(lái)源于1899年Schott出版的歌譜（該歌譜1904年在美國(guó)由Schirmer再版）。
One material source of diamond is primary diamond mines and ancient placer in the ancient Yi River upstream in Shandong, the other is the primary diamond mine which may exist in this area.
金剛石的物質(zhì)來(lái)源一是古沂河上游山東的金剛石原生礦和古砂礦，二是本區(qū)的可能存在的金剛石原生礦。
After the timeline was completed, the students were arranged in groups, and each group did a critical analysis of primary-source material, focusing on the efforts each side made to avoid the war.
經(jīng)過(guò)時(shí)間完成了，學(xué)生們被安排在組，每組做了批判性分析的主要源材料，著眼于努力，每一方，以避免戰(zhàn)爭(zhēng)。

"We've always had the philosophy that we're the primary source for this material, " he says.
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