The hornworm has just 70 muscles per segment, with just one nerve controlling each muscle, for the most part.

蠕节有70根肌肉，根肌肉大多只由一根经控制。

Trimmer comes from the field of neurobiology, where he has been studying the tobacco hornworm, Manduca sexta, since 1990.

崔默博士来自经生物学领，1990究菸草天蛾迄今。