Primary industry is the fundamental industry, and has economic competitions in its internal composition.

第一产业是基础产业，其内部也存在各行业的经济竞争。

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For the fierce competitions in tourism, Melbourne Aquarium faced challenges from the internal and external environment.

对于竞争激烈的旅游，墨尔本水族馆从内部和外部环境所面临的挑战。

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For the fierce competitions in tourism, Melbourne Aquarium faced challenges from the internal and external environment.

对于竞争激烈的旅游，墨尔本水族馆从内部和外部环境所面临的挑战。

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