misc. self recognition
因为鸦科动物有其他的认知技能，研究人员想看看它们是否也有镜像自我识别的能力。
Because corvids have these other cognitive skills, researchers wanted to see if they were also capable of mirror self-recognition.
研究人员就可以看到，当自己只是大声说出信息时，自我识别的语言学习者是否真的学得更好。
The researchers can see if the self-identified verbal learners really learned better when the information was just spoken aloud.
进一步研究发现植物具有自我识别能力。
Further studies conclusively showed plants were able to recognize themselves.
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