The mechanism for the invasion is the key scientific issue among others.

外来种的入侵机制是其中重要的科学问题。

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The key issue in constructing integrative science curriculum is how to strengthen the education of scientific knowledge and scientific spirit with the help of modern technologies.

怎样利用现代技术加强学生科学知识和科学精神的教育，是我们在构建整合型的科学课程中要着力解决的问题。

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Feed safety is the current vital issue in feed industry. Strengthening feed safety supervision and scientific researches are the key ways for insuring feed safety.

饲料安全是当前饲料工业的重要问题，确保饲料安全的关键，是加强安全管理和科学研究。

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One of its key functions will be to promote cooperation on science-related issue between UN agencies, and with the international scientific community.

UNESCO: Biodiversity Initiative