But Steve Ross, a primatologist at Lincoln Park Zoo, wanted to explore this behaviour further and found that there were no data on sequential learning in gorillas.

• 但是史蒂夫?罗斯（林肯动物园的灵长类动物学家）想进一步研究这种行为，他发现有关大猩猩排序能力学习的研究数据还没有。