In a letter to the Duke he describes all the things he can do in the way of engineering,designing mechanical de vices and weapons and playing music on instruments of his own devising.
英
美
- 在给公爵的一封信中,他描述厂自己所能做的一切事情:工程、设计机械装置和武器以及用自己发明的乐器演奏音乐。