This animal is the size of a paramecium and an amoeba, and it has a brain of 7,000 neurons that's so small -- you know these things called cell bodies you've been hearing about, where the nucleus of the neuron is?
这个动物跟草履虫和变形虫中大小相当 它有一个有7,000 个神经元的大脑，是太小了 你应该知道这些叫做细胞体的东西 神经元的核心在哪里？