这种化学讯号被认为会触发动机，而且在反复后，终将会上瘾。

This chemical signal is thought to trigger motivation and, eventually with repetition, addiction.

youdao

这种化学讯号被认为会触发动机，而且在反复后，终将会上瘾。

This chemical signal is thought to trigger motivation and, eventually with repetition, addiction.

youdao