Medical record is a primary carrier of medical information in modem hospital management.

医院管理中，病案是医疗业务管理信息的主要载体。

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Quartz in main silver carrier mineral of primary silver deposit.

石英是原生银矿床银的主要载体矿物。

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Material acts as a carrier of the material and a means of expression which is regarded as the very primary function performed by material.

材料是壁画内容的载体，是壁画表现的工具，这是材料之于壁画的最基本的作用。

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That Toronto-based Rogers won the Apple contract only makes sense as it is Canada's primary carrier.

FORBES: Magazine Article

He wants Norfolk Southern to be the primary rail carrier for imported goods from East Coast ports.

FORBES: Magazine Article

Verizon announces that it becomes a primary, but not exclusive, carrier to get the LTE capable iPhone 5 when it is released this summer.

FORBES: An Old iPhone on Verizon Won't Wow You