He says 17 demonstration projects have also been set up in partner countries.
他说，已经在伙伴国家建立了17个示范项目。
But because they are more complicated, they have not succeeded outside of demonstration projects.
但因为他们更复杂，在几个户外展示计画中均未能成功。
But because they are more complicated, they have not succeeded outside of demonstration projects.
但因为他们更复杂，在几个户外展示计画中均未能成功。
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