wind up key 中文意思是什麼
wind up key
解釋
發條鑰匙-
He ever told me a most simply way for building up a stove for using soft coal ; he also said, so as give him a shovel, and did not need nothing else, he could dig a stove on a slope, the stove would be big fire and saving firewood, the key was in wind path, depth, and smoking path
他曾教給我一個最簡便的砌煙灶的方法;他還說,只要給他一把鐵鍬,其餘什麼也不用,他在坡地上就能挖出一個火又旺柴又省的爐灶:學問不過在進風口、深度和煙道上。
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