Schools, churches, and parents must be the primary carriers of this message.

学校、教堂和家长应该承担起传输这一信息的主要责任。

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Cats are the primary carriers of Toxoplasma, though they rarely exhibit symptoms.

猫是弓形虫的初级携带者，但它们极少出现症状。

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The first rule to be observed when packaging for export is to consider the entire journey, including the short hauls to and from the primary carriers.

出口包装须遵守的第一个规则就是要照顾到货物运输的全程，包括主运程前后的短途运输过程。

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Included are three major oil companies, three primary telecom carriers and most all prominent media firms.

FORBES: Chinese Checkmate: Beating Us At Our Own Game?

Its primary ambitions are to provide international data-transmission services for businesses and to take stakes in national carriers around Asia.

ECONOMIST: Nippon Telegraph and Telephone