在其它实验中，两只不同的鸟——皮埃尔和科布，也在三个独立场景中利用了工具进行初次接触。
In other experiments, two different birds, called Pierre and Corbeau, also made the first approach with tools on three separate occasions.
在处理国际事务中，我们采取独立自主的立场和政策。
In handling international affairs, we decide our positions and policies from an independent approach.
它首先是在艺术自律过程中出现的，具有艺术的独立性精神和否定立场；
Firstly, it shows a kind of hunger in the course of the self-discipline of art, the spirit of independence and the negative position of art;
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