translation.en: So we tried to look at the Stirling engine in a new way, because it was practical -- weight no longer mattered for our application The internal combustion engine took off because weight mattered because you were moving around.
translation.zh: 接下来我们试图用新的视角来利用斯特停机， 由于它的实用性--轻巧的重量适于我们的应用 内燃机过于笨重，因此不适用， 毕竟有移动的需求。