Genes involved in motor control were also revved up, as were those that light up the brain's pleasure center.

而与控制运动相关的基因也变得活跃，进而触动大脑的愉快中枢。

The Milky Way is a spiral galaxy that both the Sun and solar system are a part, along with a bunch of stars clustered together that create a brightly lit center.

银河系是一个螺旋星系，太阳和太阳系都是它的一部分。除此以外，还有一群恒星聚集在一起，形成了一个明亮的中心。