Maybe, thought Tracy Bale, a neuroscientist at the University of Pennsylvania, the problem is stress.

宾西法尼亚大学的神经生物学家Tracy Bale认为，问题可能在于应激。

youdao

Maybe, thought Tracy Bale, a neuroscientist at the University of Pennsylvania, the problem is stress.

宾西法尼亚大学的神经生物学家Tracy Bale认为，问题可能在于应激。

youdao