adding machines
plural of adding machine
(chiefly US) a recreational structure built among the branches of a tree / a tropical residence built in a tree, or on stilts
The state or quality of being unweary.
Alternative form of bilevel
その博物館は、いくつかの古い機械式計算機を展示しており、鍵を押すと今でもカチカチと音がした。
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